Mailman - The GNU Mailing List Management System
Copyright (C) 1998-2008 by the Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

Here is a history of user visible changes to Mailman.

2.1.12 (23-Feb-2009)

  Bug fixes and other patches

    - Fix compatibility with Python 2.6.

    - Fixed a bug in admin.py which would result in chunked pages of the
      membership list for members whose address begins with a non-alphanumeric
      character to not be visible or retrievable.

    - Changed ListAdmin.py to make rejected post messages From: the -owner
      address instead of the -bounces address.

    - With MTA = 'Postfix', if the STANZA END for a list being removed is
      missing or munged, the remainder of the aliases and/or virtual-mailman
      file is lost.  Fixed.

    - Since Mailman 2.1.1, 2.0.x outstanding subscription and held message
      requests have not been migrated properly.  This is fixed.
      Bug #266106 (sf998384).

    - Changed cron/gate_news to continue processing the remaining lists on
      certain errors that can be caused by configuration of a particular list.
      Bug #265941 (sf775100).

    - Fixed a bug in AvoidDuplicates.py that caused it to fail if the address
      in the To: or Cc: header differed in case from the case-preserved member
      address.  Bug #297795.

    - Fixed a problem in SecurityManager that caused it to not find the
      cookie when CheckCookie was not given a user and the user in the cookie
      had a %xx encoded character.  Bug # 299220.

    - Fixed a minor fromusenet reporting issue in the contributed mmdsr
      script.

    - Fixed a minor issue in cron/gate_news that could cause a list's
      watermark to not be completely updated.

    - Fixed an issue that prevented editing the options.html template from
      the web admin interface. SF Bug #2164798.

    - Fixed a problem in Decorate which could throw a TypeError on conversion
      to unicode of a header/footer that was already unicode because of
      interpolating a unicode value.

    - Fixed an issue where list creation would report bad owner email
      instead of bad listname when the list name had non-ascii characters.
      SF Bug #2126489.

    - Fixed an issue where in some circumstances HyperArch.py would translate
      ' at ' into the wrong language ultimately throwing a UnicodeDecodeError
      when the translation was decoded with a different character set.
      Bug #308152.

    - Corrected a typo in Mailman/Gui/Privacy.py. Bug #309757.

    - Changed the pattern used to recognize URLs in messages for the pipermail
      archive in order to try to do a better job of making hyperlinks.
      Bug #310124.

    - Added missing --bare option to French translation of list_lists help.
      Bug #312119.

    - Fixed a long standing error that stopped relative hrefs from being
      generated for links on Mailman's web pages.

    - Changed the admindb interface so that when messages are rejected from
      the summary page, the reject reason is the rejection message from the
      Errors.HoldMessage subclass instead of the generic "No reason given".

    - Fixed the admin Membership List Find member function so the 'letter'
      links to a chunked result would still be limited to the Find member
      search. SF patch #1532081.

    - Changed scripts/driver to return a 405 status for non GET, POST, HEAD
      methods. SF patch #1578756.

    - Fixed a bug in admindb.py in the implementation of replacing "No Reason
      Given" with the default rejection reason.  Bug #325016.

    - Changed Gui/Topics.py to validate regexps in VERBOSE mode.  Bug #327008.

    - Worked around a potential problem in HyperArch.py with unicode character
      set arguments.  Bug #328353.

    - Recognize a couple more bounces.

    - Fixed a bug introduced in 2.1.11 which would attempt to store bounce info
      for a member just deleted if bounce_you_are_disabled_warnings is zero.

 i18n

    - Updated Dutch, Catalan and Polish translations.

  Miscellaneous

    - Added Lindsay Haisley's courier_to_mailman.py to the contrib directory.

    - Added John Dennis' (RedHat) FHS patch to the contrib directory.

2.1.11 (30-Jun-2008)

  New Features

    - Added a new cron/cull_bad_shunt script to cull and optionally
      archive old entries from the bad and shunt queues. This is controlled
      by new Defaults.py/mm_cfg.py settings BAD_SHUNT_STALE_AFTER (default
      7 days) and BAD_SHUNT_ARCHIVE_DIRECTORY (default None) which determine
      how long to keep bad and shunt queue entries and optionally, where to
      archive removed entries.

    - Prepended list name to bounce log unrecognized bounce messages.

    - Added a new Defaults.py|mm_cfg.py setting ACCEPTABLE_LISTNAME_CHARACTERS
      with default value '[-+_.=a-z0-9]'.  This Python regular expression
      character class specifies the characters allowed in list names.  The
      motivation for this is the fact that previously, a list named, e.g.,
      xxx&yyy could be created and MTA aliases generated that would cause
      The MTA to execute yyy as a command.  There is a possible security issue
      here, but it is not believed to be exploitable in any meaningful way.

  Bug fixes and other patches

    - Changed the preservation of unparseable messages to be conditional on
      the Defaults.py/mm_cfg.py setting of QRUNNER_SAVE_BAD_MESSAGES and
      changed the queue directory in which messages are preserved from 'shunt'
      to 'bad'.

    - Fixed a bug introduced in 2.1.10 that caused some email subscribe
      requests to be shunted (1966837).

    - Fixed a problem with bin/update erroneously moving templates from
      templates/xx to lists/xx if a list has the same name as a language
      code.  Also fixed the absolute path to lists/ (1418670 ).

    - Changed Utils.ValidateEmail to not allow specials (particularly ':')
      in unquoted local parts (1956393).

    - Changed bin/update to remove .bak files erroneously left behind in
      qfiles/*/ by a 2.1.9 bug.

    - Added 's' to %(listname) in templates/ia/admlogin.html and
      templates/sl/help.txt (1682990).

    - Use newer template variable for site-owner address in
      templates/ko/newlist.txt and templates/ru/newlist.txt (1578766).

    - Corrections to Spanish translation submitted by Wikimedia Foundation
      (1433262) and Debian.

    - Corrections to German translation submitted by Ralf Doeblitz (916196).

    - Correction to French translation submitted by Maxime Carron (1588617).

    - Correction to Portuguese translation submitted by Gabriel P. Silva
      (1733057).

    - Add #! line to fblast.py test script (1578740).

    - Fixed unescaped '%' in templates/nl/newlist.txt (1719017).

    - Changed non-ascii characters in some templates/*/*.html files to HTML
      entities.

    - Fixed a problem in Decorate.py that could result in a multipart
      message with no part headers for the original body part (1991348).

    - Improved recognition of some bounce messages.

    - Rearranged calls to the list setBounceInfo() method in Bouncer.py
      to accommodate MemberAdaptors that store bounce info outside the
      list instance.

    - Fixed CookHeaders.py which in some cases with new style prefixing
      would insert an extra space between the prefix and the subject.

    - Changed OldStyleMemberships.py to remove the member from one_last_digest
      when changing from regular to digest delivery to avoid the possibility
      of a duplicate digest in some circumstances.

    - Patched Danish message catalog for proper use of HTML entities per
      Jonas Smedegaard (1999966).

    - Improved bounce loop detection and handling in BounceRunner.py.

    - Merged the Catalan i18n from the Mailman Catalan Translation Team.

    - German translation updated by Peer Heinlein.

    - Added check for gateway_to_news before holding for ModeratedNewsgroup.

    - At some point, cron/senddigests and bin/update were inadvertently
      'preconfigured'. This has been fixed.

    - Brazilian Portuguese translation updated by Diego Francisco
      de Gastal Morales.

    - Added 'listname' to the replacements for the archidxfoot.html template.

  Miscellaneous

    - Brad Knowles' mailman daily status report script updated to 0.0.18.

2.1.10 (21-Apr-2008)

  Security

    - The 2.1.9 fixes for CVE-2006-3636 were not complete.  In particular,
      some potential cross-site scripting attacks were not detected in
      editing templates and updating the list's info attribute via the web
      admin interface.  This has been assigned CVE-2008-0564 and has been
      fixed.  Thanks again to Moritz Naumann for assistance with this.

    - There is a new mm_cfg.py/Defaults.py variable
      OWNERS_CAN_CHANGE_MEMBER_PASSWORDS which controls whether the list
      owner can change a member's password from the member's options page.
      This defaults to No and should be changed to Yes only if list owners
      are trusted to not change a member's password, log in as the member
      and make global membership changes.

  New Features

    - Changed cmd_who.py to list all members if authorization is with the
      list's admin or moderator password and to accept the password if the
      roster is public.  Also changed the web roster to show hidden members
      when authorization is by site or list's admin or moderator password
      (1587651).

    - Added the ability to put a list name in accept_these_nonmembers
      to accept posts from members of that list (1220144).

    - Added a new 'sibling list' feature to exclude members of another list
      from receiving a post from this list if the other list is in the To: or
      Cc: of the post or to include members of the other list if that list is
      not in the To: or Cc: of the post (Patch ID 1347962).

    - Added the admin_member_chunksize attribute to the admin General Options
      interface (Bug 1072002, Partial RFE 782436).

Internationalization

    - Added the Hebrew translation from Dov Zamir.  This includes addition of
      a direction ('ltr', 'rtl') to the LC_DESCRIPTIONS table.  The
      add_language() function defaults direction to 'ltr' to not break
      existing mm_cfg.py files.

    - Added the Slovak translation from Martin Matuska.

    - Added the Galician translation from Frco. Javier Rial Rodríguez.

  Bug fixes and other patches

    - Added bounce recognition for several additional bounce formats.

    - Fixed CommandRunner.py to decode a quoted-printable or base64 encoded
      message part (1829061).

    - Fixed Scrubber.py to avoid loss of an implicit text/plain message part
      with no Content-* headers in a MIME multipart message (759841).  Fixed
      several other minor scrubber issues (1242450).

    - Added Date and Message-ID headers to the confirm reply message that
      Mailman adds to the admin notification (1471318).

    - Fixed Cgi/options.py to not present the "empty" topic to user.

    - Fixed Handlers/CalcRecips.py to not process topics if topics are
      disabled for the list.  This caused users who had previously subscribed
      to topics and elected to not receive non-matching posts to receive no
      messages after topics were disabled for the list.

    - Fixed MaildirRunner.py to handle hyphenated list names.

    - Fixed a bug in MimeDel.py (content filtering) which caused
      *_filename_extensions to not match if the extension in the message was
      not all lower case.

    - Fixed versions.py to not call a non-existant method when converting held
      posts from Mailman 1.0.x lists.

    - Added a test to configure to detect a missing python-devel package on
      some RedHat systems.

    - Fixed bin/dumpdb to once again be able to dump marshals (broken since
      2.1.5) (963137).

    - Worked around a bug in the Python email library that could cause Mailman
      to not get the correct value for the sender of a message from an RFC
      2231 encoded header causing spurious held messages.

    - Fixed bin/check_perms to detect certain missing permissions on the
      archives/private/ and archives/private/<list>/database/ directories.

    - Improved exception handling in cron/senddigests.

    - Changed the admindb page to not show the "Discard all messages marked
      Defer" checkbox when there are only (un)subscribes and no held messages.
      Also added a separator and heading for "Held Messages" like the ones for
      "Subscribe Requests" and "Unsubscribe Requests".  Suppressed the
      "Database Updated" message when coming from the login page.  Also
      removed the "Discard all messages marked Defer" checkbox from the
      details page where it didn't work (1562922, 1000699).

    - Fixed admin.py so null VARHELP category is handled (1573393).

    - Fixed OldStyleMemberships.py to preserve delivery statuses BYADMIN
      and BYUSER on a straight change of address (1642388).  Also fixed a
      bug that could result in a member key with uppercase in the domain.

    - Fixed bin/withlist so that -r can take a full package path to a
      callable.

    - Removal of DomainKey/DKIM signatures is now controlled by Defaults.py
      mm_cfg.py variable REMOVE_DKIM_HEADERS (default = No).  Also, if
      REMOVE_DKIM_HEADERS = Yes, an Authentication-Results: header will be
      removed if present.

    - The DeprecationWarning issued by Python 2.5 regarding string exceptions
      is supressed.

    - format=flowed and delsp=yes are now preserved for message bodies when
      message headers/footers are added and attachments are scrubbed
      (1495122).

    - Queue runner processing is improved to log and preserve for analysis in
      the shunt queue certain bad queue entries that were previously logged
      but lost.  Also, entries are preserved when an attempt to shunt throws
      an exception (1656289).

    - The admin Membership List pages have been changed in that the email
      address which forms a part of the various CGI data keys is now
      urllib.quote()ed. This allows changing options for and unsubbing an
      address which contains a double-quote character, but it may require
      changes to scripts that screen-scrape the web admin interface to
      produce a membership list so they will report an unquoted address.

    - The fix for bug 1181161 in 2.1.7 was incomplete.  The Approve(d): line
      wasn't always found in quoted-printable encoded parts and was never
      found in base64 encoded parts.  This is now fixed.

    - Fixed a mail loop if a list owner puts the list's -bounces or -admin
      address in the list's owner attribute (1834569).

    - Fixed the mailto: link in archived messages to prefix the subject with
      Re: and to put the correct message-id in In-Reply-To (1621278, 1834281).

    - Coerced list name arguments to lower case in the change_pw, inject,
      list_admins and list_owners command line tools (patch 1842412).

    - Fixed cron/disabled to test if bounce info is stale before disabling
      a member when the threshold has been reduced.

    - It wasn't noted here, but in 2.1.9, queue runner processing was made
      more robust by making backups of queue entries when they were dequeued
      so they could be recovered in the event of a system failure.  This
      opened the possibility that if a message itself caused a runner to
      crash, a loop could result that would endlessly reprocess the message.
      This has now been fixed by adding a dequeue count to the entry and
      moving the entry aside and logging the fact after the third dequeue of
      the same entry.

    - Fixed the command line scripts add_members, sync_members and
      clone_member to properly handle banned addresses (1904737).

    - Fixed bin/newlist to add the list's preferred language to the list's
      available_languages if it is other than the server's default language
      (1906368).

    - Changed the first URL in the RFC 2369 List-Unsubscribe: header to go
      to the options login page instead of the listinfo page.

    - Changed the options login page to not issue the "No address given" error
      when coming from the List-Unsubscribe and other direct links.  Also
      changed to remember the user's language selection when redisplaying the
      page following an error.

    - Changed cmd_subscribe.py to properly accept (no)digest without a
      password and to recognize (no)digest and address= case insensitively.

    - Fixed a problem where GuiBase._getValidValue() would truncate a
      floating point Number type to an int if the value was a float instead
      of a numeric string. This affected setting floating point values with
      config_list.

  Miscellaneous

    - Brad Knowles' mailman daily status report script updated to 0.0.17.

    - An updated mm-handler (mm-handler-2.1.10) that can help reduce
      backscatter has been added to the contrib directory.

2.1.9 (12-Sep-2006)

  Security

    - A malicious user could visit a specially crafted URI and inject an
      apparent log message into Mailman's error log which might induce an
      unsuspecting administrator to visit a phishing site.  This has been
      blocked.  Thanks to Moritz Naumann for its discovery.

    - Fixed denial of service attack which can be caused by some
      standards-breaking RFC 2231 formatted headers.  CVE-2006-2941.

    - Several cross-site scripting issues have been fixed.  Thanks to Moritz
      Naumann for their discovery.  CVE-2006-3636

    - Fixed an unexploitable format string vulnerability.  Discovery and fix
      by Karl Chen.  Analysis of non-exploitability by Martin 'Joey' Schulze.
      Also thanks go to Lionel Elie Mamane.  CVE-2006-2191.

  Internationalization

    - New languages: Arabic, Vietnamese.

  Bug fixes and other patches

    - Fixed Decorate.py so that characters in message header/footer which
      are not in the character set of the list's language are ignored rather
      than causing shunted messages (1507248).

    - Switchboard.py - Closed very tiny holes at the upper ends of queue
      slices that could result in unprocessable queue entries.  Improved FIFO
      processing when two queue entries have the same timestamp.

2.1.8 (15-Apr-2006)

  Security

    - A cross-site scripting hole in the private archive script of 2.1.7
      has been closed.  Thanks to Moritz Naumann for its discovery.

  Bug fixes and other patches

    - Bouncers support added: 'unknown user', Microsoft SMTPSVC, Prodigy.net
      and several others.

    - Updated email library to 2.5.7 which will encode payload into qp/base64
      upon setting.  This enabled backing out the scrubber related patches
      including 'X-Mailman-Scrubbed' header in 2.1.7.

    - Fix SpamDetect.py potential hold/reject loop problem.

    - A warning message from email package to the stderr can cause error
      in Logging because stderr may be detached from the process during
      the qrunner run.  We chose not to output errors to stderr but to
      the logs/error if the process is running under mailmanctl subprocess.

    - DKIM header cleansing was separated from Cleanse.py and added to
      -owner messages too.

    - Fixes: Lose Topics when go directly to topics URL (1194419).
      UnicodeError running bin/arch (1395683).  edithtml.py missing import
      (1400128).  Bad escape in cleanarch.  Wrong timezone in list archive
      index pages (1433673).  bin/arch fails with TypeError (1430236).
      Subscription fails with some Language combinations (1435722).
      Postfix delayed notification not recognized (863989).  2.1.7 (VERP)
      mistakes delay notice for bounce (1421285).  show_qfiles: 'str'
      object has no attribute 'as_string' (1444447).  Utils.get_domain()
      wrong if VIRTUAL_HOST_OVERVIEW off (1275856).

  Miscellaneous

    - Brad Knowles' mailman daily status report script updated to 0.0.16.

2.1.7 (31-Dec-2005)

  Security

    - The fix for CAN-2005-0202 has been enhanced to issue an appropriate
      message instead of just quietly dropping ./ and ../ from URLs.

    - A note on CVE-2005-3573: Although the RFC2231 bug example in the CVE has
      been solved in Mailman 2.1.6, there may be more cases where
      ToDigest.send_digests() can block regular delivery.  We put the
      send_digests() calling part in a try/except clause and leave a message
      in the error log if something happened in send_digests().  Daily call of
      cron/senddigests will provide more detail to the site administrator.

    - List administrators can no longer change the user's option/subscription
      globally.  Site admin can change these only if
      mm_cfg.ALLOW_SITE_ADMIN_COOKIES is set to Yes.

    - <script> tags are HTML-escaped in the edithtml CGI script.

    - Since the probe message for disabled users may reach unintended
      recipients, the password is excluded from sendProbe() and probe.txt.
      Note that the default value of VERP_PROBE has been set to `No' from
      2.1.6., thus this change doesn't affect the default behavior.

  New Features

    - Always remove DomainKey (and similar) headers from messages sent to the
      list. (1287546)

    - List owners can control the content filter behavior when collapsing
      multipart/alternative parts to its first subpart.  This allows the
      option of letting the HTML part pass through after other content
      filtering is done.

  Internationalization

    - New language: Interlingua.

  Bug fixes and other patches

    - Defaults.py.in: SCRUBBER_DONT_USE_ATTACHMENT_FILENAME is set to True for
      safer operation.

    - Fixed the bug where Scrubber.py munges quoted-printable by introducing
      the 'X-Mailman-Scrubbed' header which marks that the payload is
      scrubber-munged.  The flag is referenced in ToDigest.py, ToArchive.py,
      Decorate.py and Archiver.  A similar problem in ToDigest.py where the
      plain digest is generated is also fixed.

    - Fixed Syslog.py to write quopri encoded messages when it fail to write
      8-bit characters.

    - Fixed MTA/Postfix.py to check aliases group permission in check_perms
      and fixed mailman-install document on this matter (1378270).

    - Fixed private.py to go to the original URL after authorization
      (1080943).

    - Fixed bounce log score messages to be more consistent.

    - Fixed bin/remove_members to accept no arguments when both --fromall and
      --file= options are specified.

    - Changed cgi-bin and mail wrapper "group not found" error message to be
      more descriptive of the actual problem.

    - The list's ban_list now applies to address changes, admin mass
      subscribes and invites, and to confirmations/approvals of address
      changes, subscriptions and invitations.

    - quoted-printable and base64 encoded parts are decoded before passing to
      HTML_TO_PLAIN_TEXT_COMMAND (1367783).

    - Approve: header is removed from posts, and treated the same as the
      Approved: header. (1355707)

    - Fixed the removal of the line following Approve[d]: line in body of
      post.  (1318883)

    - The Approve[d]: <password> header is removed from all text/* parts in
      addition the initial text/plain part.  It must still be the first
      non-blank line in the first text/plain part or it won't be found or
      removed at all. (1181161)

    - Posts are now logged in post log file with the true sender, not
      listname-bounces. (1287921)

    - Correctly initialize and remember the list's default_member_moderation
      attribute in the web list creation page. (1263213)

    - PEP263 charset is added to the config_list output. (1343100)

    - Fixed header_filter_rules getting lost if accessed directly and
      authentication was needed by login page. (1230865)

    - Obscure email when the poster doesn't set full name in 'From:' header.

    - Preambles and epilogues are taken into account when calculating message
      sizes for holding purposes. (Mark Sapiro)

    - Logging/Logger.py unicode transform option. (1235567)

    - bin/update crashes with bogus files. (949117)

    - Bugs and patches: 1212066/1301983 (Date header in create/remove notice)

2.1.6 (30-May-2005)

  Security

    - Critical security patch for path traversal vulnerability in private
      archive script  (CAN-2005-0202).

    - Added the ability for Mailman generated passwords (both member and list
      admin) to be more cryptographically secure.  See new configuration
      variables USER_FRIENDLY_PASSWORDS, MEMBER_PASSWORD_LENGTH, and
      ADMIN_PASSWORD_LENGTH.  Also added a new bin/withlist script called
      reset_pw.py which can be used to reset all member passwords.  Passwords
      generated by Mailman are now 8 characters by default for members, and 10
      characters for list administrators.

    - A potential cross-site scripting hole in the driver script has been
      closed.  Thanks to Florian Weimer for its discovery.  Also, turn
      STEALTH_MODE on by default.

  Internationalization

    - Chinese languages are now supported.  They have been moved from 'big5'
      and 'gb' to 'zh_TW' and 'zh_CN' respectively for compliance to the IANA
      spec.  Note, however, that the character sets were changed from 'Big5'
      or 'GB2312' to 'UTF-8' to cope with the insufficient codecs support in
      Python 2.3 and earlier.  You may have to install Chinese capable codecs
      (like CJKCodecs) separately to handle the incoming messages which are in
      local charsets, or upgrade your Python to 2.4 or newer.

  Behavior or defaults changes

    - VERP_PROBES is disabled by default.

    - bin/withlist can be run without a list name, but only if -i is given.
      Also, withlist puts the directory it's found in at the end of sys.path,
      making it easier to run withlist scripts that live in $prefix/bin.

    - bin/newlist grew two new options: -u/--urlhost and -e/--emailhost which
      lets the user provide the web and email hostnames for the new mailing
      list.  This is a better way to specify the domain for the list, rather
      than the old 'mylist@hostname' syntax (which is still supported for
      backward compatibility, but deprecated).

  Compatibility

    - Python 2.4 compatibility issue: time.strftime() became strict about the
      'day of year' range.  (1078482)

  New Features

    - New feature: automatic discards of held messages.  List owners can now
      set how many days to hold the messages in the moderator request queue.
      cron/checkdb will automatically discard old messages.  See the
      max_days_to_hold variable in the General Options and
      DEFAULT_MAX_DAYS_TO_HOLD in Defaults.py.  This defaults to 0
      (i.e. disabled). (790494)

    - New feature: subject_prefix can be configured to include a sequence
      number which is taken from the post_id variable.  Also, the prefix is
      always put at the start of the subject, i.e. "[list-name] Re: original
      subject", if mm_cfg.OLD_STYLE_PREFIXING is set No.  The default style
      is "Re: [list-name]" if numbering is not set, for backward compatibility.
      If the list owner is using numbering feature by "%d" directive, the new
      style, "[list-name 123] Re:", is always used.

    - List owners can now cusomize the non-member rejection notice from
      admin/<listname>/privacy/sender page. (1107169)

    - Allow editing of the welcome message from the admin page (1085501).

    - List owners can now use Scrubber to get the attachments scrubbed (held
      in the web archive), if the site admin permits it in mm_cfg.py.  New
      variables introduced are SCRUBBER_DONT_USE_ATTACHMENT_FILENAME and
      SCRUBBER_USE_ATTACHMENT_FILENAME_EXTENSION in Defaults.py for scrubber
      behavior.  (904850)

  Documentation

    - Most of the installation instructions have been moved to a latex
      document.  See doc/mailman-install/index.html for details.

  Bug fixes and other patches

    - Mail-to-news gateway now strips subject prefix off from a response
      by a mail user if news_prefix_subject_too is not set.

    - Date and Message-Id headers are added for digests. (1116952)

    - Improved mail address sanity check.  (1030228)

    - SpamDetect.py now checks attachment header.  (1026977)

    - Filter attachments by filename extensions.  (1027882)

    - Bugs and patches: 955381 (older Python compatibility), 1020102/1013079/
      1020013 (fix spam filter removed), 665569 (newer Postfix bounce
      detection), 970383 (moderator -1 admin requests pending), 873035
      (subject handling in -request mail), 799166/946554 (makefile
      compatibility), 872068 (add header/footer via unicode), 1032434
      (KNOWN_SPAMMERS check for multi-header), 1025372 (empty Cc:), 789015
      (fix pipermail URL), 948152 (Out of date link on Docs),  1099138
      (Scrubber.py breaks on None part),  1099840/1099840 (deprecated %
      insertion),  880073/933762 (List-ID RFC compliance),  1090439 (passwd
      reminder shunted), 1112349 (case insensitivity in acceptable_aliases),
      1117618 (Don't Cc for personalized anonymous list), 1190404 (wrong
      permission after editing html)

2.1.5 (15-May-2004)

    - The admindb page has a checkbox that allows you to discard all held
      messages that are marked Defer.  On heavy lists with lots of spam holds,
      this makes clearing them much faster.

    - The qrunner system has changed to use only one file per message.
      However the configuration variable METADATA_FORMAT has been removed, and
      support for SAVE_MSGS_AS_PICKLES has been changed.  The latter no longer
      writes messages as plain text.  Instead, they are stored as pickles of
      plain strings, using the text pickle format.  This still makes them
      non-binary files readable and editable by humans.

      bin/dumpdb also works differently.  It will print out the entire pickle
      file (with more verbosity) and if used with 'python -i', it binds msg to
      a list of all objects found in the pickle file.

      Removed from Defaults.py: PENDINGDB_LOCK_TIMEOUT,
      PENDINGDB_LOCK_ATTEMPTS, METAFMT_MARSHAL, METAFMT_BSDDB_NATIVE,
      METAFMT_ASCII, METADATA_FORMAT

    - The bounce processor has been redesigned so that now when an address's
      bounce score reaches the threshold, that address will be sent a probe
      message.  Only if the probe bounces will the address be disabled.  The
      score is reset to zero when the probe is sent.  Also, bounce events are
      now kept in an event file instead of in memory.  This should help
      contain the bloat of the BounceRunner.

      New supporting variables in Defaults.py: VERP_PROBE_FORMAT,
      VERP_PROBE_REGEXP

      REGISTER_BOUNCES_EVERY is promoted to a Defaults.py variable.

    - The pending database has been changed from a global pickle file, to a
      unique pickle file per mailing list.

    - The 'request' database file has changed from a marshal, to the more
      secure pickle format.

    - Disallow multiple password retrievals.

    - SF patch #810675 which adds a "Discard all messages marked Defer" button
      for faster admindb maintenance.

    - The email package is updated to version 2.5.5.

    - New language: Turkish.

    - Bugs and patches: 869644, 869647 (NotAMemberError for old cookie data),
      878087 (bug in Slovenian catalog), 899263 (ignore duplicate pending
      ids), 810675 (discard all defers button)

2.1.4 (31-Dec-2003)

    - Close some cross-site scripting vulnerabilities in the admin pages
      (CAN-2003-0965).

    - New languages: Catalan, Croatian, Romanian, Slovenian.

    - New mm_cfg.py/Defaults.py variable PUBLIC_MBOX which allows the site
      administrator to disable public access to all the raw list mbox files
      (this is not a per-list configuration).

    - Expanded header filter rules under Privacy -> Spam Filters.  Now you can
      specify regular expression matches against any header, with specific
      actions tied to those matches.

    - Rework the SMTP error handling in SMTPDirect.py to avoid scoring bounces
      for all recipients when a permanent error code is returned by the mail
      server (e.g. because of content restrictions).

    - Promoted SYNC_AFTER_WRITE to a Default.py/mm_cfg.py variable and
      make it control syncing on the config.pck file.  Also, we always flush
      and sync message files.

    - Reduce archive bloat by not storing the HTML body of Article objects in
      the Pipermail database.  A new script bin/rb-archfix was added to clean
      up older archives.

    - Proper RFC quoting for List-ID descriptions.

    - PKGDIR can be passed to the make command in order to specify a different
      directory to unpack the distutils packages in misc.  (SF bug 784700).

    - Improved logging of the origin of subscription requests.

    - Bugs and patches: 832748 (unsubscribe_policy ignored for unsub button on
      member login page), 846681 (bounce disabled cookie was always out of
      date), 835870 (check VIRTUAL_HOST_OVERVIEW on through the web list
      creation), 835036 (global address change when the new address is already
      a member of one of the lists), 833384 (incorrect admin password on a
      hold message confirmation attachment would discard the message), 835012
      (fix permission on empty archive index), 816410 (confirmation page
      consistency), 834486 (catch empty charsets in the scrubber), 777444 (set
      the process's supplemental groups if possible), 860135 (ignore
      DiscardMessage exceptions during digest scrubbing), 828811 (reduce
      process size for list and admin overviews), 864674/864676 (problems
      accessing private archives and rosters with admin password), 865661
      (Tokio Kikuchi's i18n patches), 862906 (unicode prefix leak in admindb),
      841445 (setting new_member_options via config_list), n/a (fixed email
      command 'set delivery')

2.1.3 (28-Sep-2003)

    Performance, Reliability, Security

        - Closed a cross-site scripting exploit in the create cgi script.

        - Improvements in the performance of the bounce processor.
          Now, instead of processing each bounce immediately (which
          can cause severe lock contention), bounce events are queued.
          Every 15 minutes by default, the queued bounce events are
          processed en masse, on a list-per-list basis, so that each
          list only needs to be locked once.

        - When some or all of a message's recipients have temporary
          delivery failures, the message is moved to a "retry" queue.
          This queue wakes up occasionally and moves the file back to
          the outgoing queue for attempted redelivery.  This should
          fix most observed OutgoingRunner 100% cpu consumption,
          especially for bounces to local recipients when using the
          Postfix MTA.

        - Optional support for fsync()'ing qfile data after writing.
          Under some catastrophic system failures (e.g. power lose),
          it would be possible to lose messages because the data
          wasn't sync'd to disk.  By setting SYNC_AFTER_WRITE to True
          in Mailman/Queue/Switchboard.py, you can force Mailman to
          fsync() queue files after flushing them.  The benefits are
          debatable for most operating environments, and you must
          ensure that your Python has the os.fsync() function defined
          before enabling this feature (it isn't, even on all
          Unix-like operating systems).

    Internationalization

        - New languages Ukrainian, Serbian, Danish, Euskara/Basque.

        - Fixes to template lookup.  Lists with local overriding
          templates would find the wrong template.

        - .mo files (for internationalization) are now generated at
          build time instead of coming as part of the source
          distribution.

    Documentation

        - A first draft of member documentation by Terri Oda.  There
          is also a Japanese translation of this manual by Ikeda Soji.

    Archiver / Pipermail

        - In the configuration variables PUBLIC_EXTERNAL_ARCHIVER, and
          PRIVATE_EXTERNAL_ARCHIVER, %(hostname)s has been added to
          the list of allowable substitution variables.

        - The timezone is now taken into account when figuring the
          posting date for an article.

    Scripts / Cron

        - Fixes to cron/disabled for NotAMemberError crashes.

        - New script bin/show_qfiles which prints the contents of .pck
          message files.  New script bin/discard which can be used to
          mass discard held messages.

        - Fixes to cron/mailpasswds to account for old password-less
          subscriptions.

        - bin/list_members has grown two new options: --invalid/-i
          prints only the addresses in the member database that are
          invalid (which could have snuck in via old releases);
          --unicode/-u prints addresses which are stored as Unicode
          objects instead of as normal strings.

    Miscellaneous

        - Fixes to problems in some configurations where Python wouldn't
          be able to find its standard library.

        - Fixes to the digest which could cause MIME-losing missing
          newlines when parts are scrubbed via the content filters.

        - In the News/Mail gateway admin page, the configuration variable
          nntp_host can now be a name:port pair.

        - When messages are pulled from NNTP, the member moderation checks
          are short-circuited.

        - email 2.5.4 is included.  This fixes an RFC 2231 bug, among
          possibly others.

        - Fixed some extra spaces that could appear in the List-ID header.

        - Fixes to ensure that invalid email addresses can't be invited.

        - WEB_LINK_COLOR in Defaults.py/mm_cfg.py should now work.

        - Fixes so that shunted message file names actually match
          those logged in log/errors.

        - An improved pending action cookie generation algorithm has
          been added.

        - Fixes to the DSN bounce detector.

        - The usual additional u/i, internationalization, unicode, and
          other miscellaneous fixes.

2.1.2 (22-Apr-2003)

    - New languages Portuguese (Portugal) and Polish.

    - Many convenient constants have been added to the Defaults.py
      module to (hopefully) make it more readable.

    - Email addresses which contain 8-bit characters in them are now
      rejected and won't be subscribed.  This is not the same as 8-bit
      characters in the realname, which is still allowed.

    - The X-Originating-Email header is removed for anonymous lists.
      Hotmail apparently adds this header.

    - When running make to build Mailman, you can specify $DESTDIR to
      the install target to specify an alternative location for
      installation, without influencing the paths stored in
      e.g. Defaults.py.  This is useful to package managers.

    - New Defaults.py variable DELIVERY_RETRY_WAIT which controls how
      long the outgoing qrunner will wait before it retries a
      tempfailure delivery.

    - The semantics for the extend.py hook to MailList objects has
      changed slightly.  The hook is now called before attempting to
      lock and load the database.

    - Mailman now uses the email package version 2.5.1

    - bin/transcheck now checks for double-%'s

    - bin/genaliases grew a -q / --quiet flag

    - cron/checkdbs grew a -h / --help option.

    - The -c / --change-msg option has been removed from bin/add_members

    - bin/msgfmt.py has been added, taken from Python 2.3's Tools/i18n
      directory.  The various .mo files are now no longer distributed
      with Mailman.  They are generated at build time instead.

    - A new file misc/sitelist.cfg which can be used with
      bin/config_list provides a small number of recommended settings
      for your site list.  Be sure to read it over before applying!
      sitelist.cfg is installed into the data directory.

    - Many bug fixes, including these SourceForge bugs closed and
      patches applied: 677668, 690448, 700538, 700537, 673294, 683906,
      671294, 522080, 521124, 534297, 699900, 697321, 695526, 703941,
      658261, 710678, 707608, 671303, 717096, 694912, 707624, 716755,
      661138, 716754, 716702, 667167, 725369, 726415


2.1.1 (08-Feb-2003)

    Lots of bug fixes and language updates.  Also:

    - Closed a cross-site scripting vulnerability in the user options page.

    - Restore the ability to control which headers show up in messages
      included in plaintext and MIME digests.  See the variables
      PLAIN_DIGEST_KEEP_HEADERS and MIME_DIGEST_KEEP_HEADERS in
      Defaults.py.

    - Messages included in the plaintext digests are now sent through
      the scrubber to remove (and archive) attachments.  Otherwise,
      attachments would screw up plaintext digests.  MIME digests
      include the attachments inline.

2.1 final (30-Dec-2002)

    Last minute bug fixes and language updates.

2.1 rc 1 (24-Dec-2002)

    Bug fixes and language updates.  Also,

    - Lithuanian support has been added.

    - bin/remove_members grew --nouserack and --noadminack switches

    - configure now honors --srcdir

2.1 beta 6 (09-Dec-2002)

    Lots and lots of bug fixes, and translation updates.  Also,

    - ARCHIVER_OBSCURES_EMAILADDRS is now set to true by default.

    - QRUNNER_SAVE_BAD_MESSAGES is now set to true by default.

    - Bounce messages which were recognized, but in which no member
      addresses were found are no longer forwarded to the list
      administrator.

    - bin/arch grew a --wipe option which first removes the entire old
      archive before regenerating the new one.

    - bin/mailmanctl -u now prints a warning that permission problems
      could appear, such as when trying to delete a list through the
      web that has some archives in it.

    - bin/remove_members grew --nouserack/-n and -noadminack/-N options.

    - A new script bin/list_owners has been added for printing out
      list owners and moderators.

    - Dates in the web version of archived messages are now relative
      to the local timezone, and include the timezone names, when
      available.

2.1 beta 5 (19-Nov-2002)

    As is typical for a late beta release, this one includes the usual
    bug fixes, tweaks, and massive new features (just kidding).

    IMPORTANT: If you are using Pipermail, and you have any archives
    that were created or added to in 2.1b4, you will need to run
    bin/b4b5-archfix, followed by bin/check_perms to fix some serious
    performance problems.  From you install directory, run
    "bin/b4b5-archfix --help" for details.

    - The personalization options have been tweaked to provide more
      control over mail header and decoration personalizations.  In
      2.1b4, when personalization was enabled, the To and Cc headers
      were always overwritten.  But that's usually not appropriate for
      anything but announce lists, so now these headers aren't changed
      unless "Full personalization" is enabled.

    - You now need to go to the General category to enable emergency
      moderation.

    - The order of the hold modules in the GLOBAL_PIPELINE has
      changed, again.  Now Moderate comes before Hold.

    - Estonian language support has been added.

    - All posted messages should now get decorated with headers and
      footers in a MIME-safe way.  Previously, some MIME type messages
      didn't get decorated at all.

    - bin/arch grew a -q/--quiet option

    - bin/list_lists grew a -b/--bare option

2.1 beta 4 (26-Oct-2002)

    The usual assortment of bug fixes and language updates, some u/i
    tweaks, as well as the following:

    - Configuring / building / installing
        o Tightened up some configure checks; it will now bark loudly
          if you don't have the Python distutils package available
          (some Linux distros only include distutils in their "devel"
          packages).

        o Mailman's username/group security assertions are now done by
          symbolic name instead of numeric id.  This provides a level
          of indirection that makes it much easier to move or package
          Mailman.  --with-mail-gid and --with-cgi-gid are retained,
          but they control the group names used instead.

    - Command line scripts
        o A new script, bin/transcheck that language teams can use to
          check their .po files.

        o bin/list_members grew a --fullnames/-f option to print the
          full names along with the addresses.

        o cron/senddigests grew --help/-h and --listname/-l options.

        o bin/fix_url.py grew some command line options to support moving
          a list to a specific virtual domain.

    - Pipermail / archiving
        o Reworked the directory layout for archive attachments to be
          less susceptible to inode overload.  Attachments are now
          placed in

          archives/private/<listname>/attachments/<YYYYMMDD>/<msgidhash>

        o Internationalization support in the archiver has been improved.

    - Internationalization
        o New languages: Swedish.

    - Mail handling
        o Content filtering now has a pass_mime_type variable, which
          is a whitelist of MIME types to allow in postings.  See the
          details of the variable in the Content Filtering category
          for more information.

        o If a member has enabled their DontReceiveDuplicates option,
          we'll also strip their addresses from the Cc headers in the
          copy of the message sent to the list.  This helps keep the
          Cc lines from growing astronomically.

        o Bounce messages are now forwarded to the list administrators
          both if they are unrecognized, and if no list member's
          address could be extracted.

        o Content filtering now has a filter_action variable which
          controls what happens when a message matches the content
          filter rules.  The default is still to discard the message.

        o When searching for an Approve/Approved header, the first
          non-whitespace line of the body of the message is also
          checked, if the body has a MIME type of text/plain.

        o If a list is personalized, and the list's posting address is
          not included in a Reply-To header, the posting address is
          copied into a Cc header, otherwise there was no (easy) way a
          recipient could reply back to the list.

        o Added a MS Exchange bounce recognizer.

        o New configuration variable news_moderation which allows the
          mail->news gateway to properly post to moderated newsgroups.

        o Messages sent to a list's owners now comes from the site
          list to prevent mail loops when list owners or moderators
          having bouncing addresses.

    - Miscellaneous
        o mailanctl prevents runaway restarts by imposing a maximum
          restart value (defaulting to 10) for restarting the
          qrunners.  If you hit this limit, do "mailmanctl stop"
          followed by "mailmanctl start".

        o The Membership Management page's search feature now includes
          searching on members real names.

        o The start of a manual for list administrators is given in
          Python HOWTO format (LaTeX).  It's in doc/mailman-admin.tex
          but it still needs lots of fleshing out.

        o More protections against creating a list with an invalid name.

2.1 beta 3 (09-Aug-2002)

    The usual assortment of bug fixes and language updates.

    - New languages: Dutch, Portuguese (Brazil)

    - New configure script options: --with-mailhost, --with-urlhost,
      --without-permcheck.  See ./configure --help for details.

    - The encoding of Subject: prefixes is controlled by a new list
      option encode_ascii_prefixes.  This is useful for languages with
      character sets other than us-ascii.  See the Languages admin
      page for details.

    - A new list option news_prefix_subject_too controls whether
      postings gated from mail to news should have the subject prefix
      added to their Subject: header.

    - The algorithm for upgrading the moderation controls for a
      Mailman 2.0.x list has changed.  The change should be
      transparent, but you'll want to double check the moderation
      controls after upgrading from MM2.0.x.  This should have no
      effect for upgrades from a previous MM2.1 beta.

      See the UPGRADING file for details.

    - On the Mass Subscribe admin page, a text box has been added so
      that the admin can add a custom message to be prepended to the
      welcome/invite notification.

    - On the admindb page, a link is included to more easily reload
      the page.

    - The Sendmail.py delivery module is sabotaged so that it can't be
      used naively.  You need to read the comments in the file and
      edit the code to use this unsafe module.

    - When a member sends a `help' command to the request address,
      the url to their options page is included in the response.

    - Autoresponses, -request command responses, and posting hold
      notifications are inhibited for any message that has a
      Precedence: {bulk|list|junk} header.  This is to avoid mail
      loops between email 'bots.  If the original message has an
      X-Ack: yes header, the response is sent.

      Responses are also limited to a maximum number per day, as
      defined in the site variable MAX_AUTORESPONSES_PER_DAY.  This is
      another guard against 'bot loops, and it defaults to 10.

    - When a Reply-To: header is munged to include both the original
      and the list address, the list address is always added last.

    - The cron/mailpasswds script has grown a -l/--listname option.

    - The cron/disabled script has grown options to send out
      notifications for reasons other than bounce-disabled.  It has
      also grown a -f/--force option.  See cron/disabled --help for
      details.

    - The bin/dumpdb script has grown a -n/--noprint option.

    - An experimental new mechanism for processing incoming messages
      has been added.  If you can configure your MTA to do qmail-style
      Maildir delivery, Mailman now has a MaildirRunner qrunner.  This
      may turn out to be much more efficient and scalable, but for
      MM2.1, it will not be officially supported.  See Defaults.py.in
      and Mailman/Queue/MaildirRunner.py for details.

2.1 beta 2 (05-May-2002)

    Lots of bug fixing, and the following new features and changes:

    - A "de-mime" content filter feature has been added.  This
      oft-requested feature allows you to specify MIME types that
      Mailman should strip off of any messages before they're posted
      to the list.  You can also optionally convert text/html to
      text/plain (by default, through lynx if it's available).

    - Changes to the way the RFC 2919 and 2369 headers (i.e. the
      List-*: headers) are added:
          o List-Id: is always added
          o List-Post:, List-Help:, List-Subscribe:,
            List-Unsubscribe:, and List-Archive: are only added to
            posting messages.
          o X-List-Administrivia: is only added to messages Mailman
            creates and sends out of its own accord.

      Also, if the site administrator allows it, list owners can
      suppress the addition of all the List-*: headers.  List owners
      can also separately suppress the List-Post: header for
      announce-only lists.

    - A new framework for email commands has been added.  This allows
      you to easily add, delete, or change the email commands that
      Mailman understands, on a per-site, per-list, or even per-user
      basis.

    - Users can now change their digest delivery type from MIME to
      plain text globally, for all lists they are subscribed to.

    - No language select pulldowns are shown if the list only supports
      one language.

    - More mylist-admin eradication.

    - Several performance improvements in the bounce qrunner, one of
      which is to make it run only once per minute instead of once per
      second.

    - Korean language support as been added.

    - Gatewaying from news -> mail uses its connections to the nntpd
      more efficiently.

    - In bin/add_members, -n/--non-digest-members-file command line
      switch is deprecated in favor of -r/--regular-members-file.

    - bin/sync_members grew a -g/--goodbye-msg switch.

2.1 beta 1 (16-Mar-2002)

    In addition to the usual bug fixes, performance improvements, and
    GUI changes, here are the highlights:

    - MIME and other message handling
        o More robustness against badly MIME encapsulated messages: if
          a MessageParseError is raised during the initial parse, the
          message can either be discarded or saved in qfiles/bad,
          depending on the value of the new configuration variable
          QRUNNER_SAVE_BAD_MESSAGES.

        o There is a new per-user option that can be used to avoid
          receipt of extra copies, when a member of the list is also
          explicitly CC'd.

        o Always add an RFC 2822 Date: header if missing, since not
          all MTAs insert one automatically.

        o The Sender: and Errors-To: headers are no longer added to
          outgoing messages.

        o Headers and footers are always added by concatenation, if
          the message is not MIME and if the list's charset is a
          superset of us-ascii.

    - List administration
        o An `invitation' feature has been added.  This is selectable
          as a radio button on the mass subscribe page.  When
          selected, users are invited to join instead of immediately
          joined, i.e. they get a confirmation message.

        o You can now enable and disable list owner notifications for
          disabled-due-to-bouncing and removal-due-to-bouncing
          actions.  The site config variables
          DEFAULT_BOUNCE_NOTIFY_OWNER_ON_DISABLE and
          DEFAULT_BOUNCE_NOTIFY_OWNER_ON_REMOVAL control the default
          behavior.

        o List owners can now decide whether they receive unrecognized
          bounce messages or not (i.e. messages that the bounce
          processor doesn't recognize).  Site admins can set the
          default value for this flag with the config variable
          DEFAULT_BOUNCE_UNRECOGNIZED_GOES_TO_LIST_OWNER.

        o The admindb summary page gives the option of clearing the
          moderation flag of members who are on quarantined.

        o The action to take when a moderated member posts to a list
          is now configurable.  The message can either be held,
          rejected (bounced), or discarded.  If the message is
          rejected, a rejection notice string can be given.

        o In the General admin page, you can now set the default value
          for five per-user flags: concealing the user's email
          address, acknowledging posts sent by the user, copy
          suppression, not-me-too selection, and the default digest
          type.  Site admins can set the default bit field with the
          new DEFAULT_NEW_MEMBER_OPTIONS variable.

        o A new "Emergency brake" feature for turning on moderation of
          all list postings.  This is useful for when flamewars break
          out, and the list needs a cooling off period.  Messages
          containing an Approved: header with the list owner password
          are still allowed through, as are messages approved through
          the admindb interface.

        o When a moderated message is approved for the list, add an
          X-Mailman-Approved-At: header which contains the timestamp
          of the approval action (changed from X-Moderated: with a
          different format).

        o Lists can now be converted to using a less error prone
          mechanism for variable substitution syntax in headers and
          footers.  Instead of %(var)s strings, you'd use $var
          strings.  You must use "bin/withlist -r convert" to enable
          this.

        o When moderating held messages, the header text box and the
          message excerpt text box are now both read-only.

        o You can't delete the site list through the web.

        o When creating new lists through the web, you have the option
          of setting the "default member moderation" flag.

    - Security and privacy
        o New feature: banned subscription addresses.  Privacy
          options/subscription rules now have an additional list box
          which can contain addresses or regular expressions.
          Subscription requests from any matching address are
          automatically rejected.

        o Membership tests which compare message headers against list
          rosters are now more robust.  They now check, by default
          these header in order: From:, unixfrom, Reply-To:, Sender:.
          If any match, then the membership test succeeds.

        o ALLOW_SITE_ADMIN_COOKIES is a new configuration variable
          which says whether to allow AuthSiteAdmin cookies or not.
          Normally, when a list administrator logs into a list with
          the site password, they are issued a cookie that only allows
          them to do administration for this one list.  By setting
          ALLOW_SITE_ADMIN_COOKIES to 1, the user only needs to
          authenticate to one list with the site password, and they
          can administer any mailing list.

          I'm not sure this feature is wise, so the default value for
          ALLOW_SITE_ADMIN_COOKIES is 0.

        o Marc MERLIN's new recipes for secure Linuxes have been
          updated.

        o DEFAULT_PRIVATE_ROSTER now defaults to 1.

        o Passwords are no longer included in the confirmation pages.

    - Internationalization
        o With the approval of Tamito KAJIYAMA, the Japanese codecs
          for Python are now included automatically, so you don't need
          to download and install these separate.  It is installed in
          a Mailman-specific place so it won't affect your larger
          Python installation.

        o The configure script will produce a warning if the Chinese
          codes are not installed.  This is not a fatal error.

        o Russian templates and catalogs have been added.

        o Finnish templates and catalogs have been added.

    - Scripts and utilities
        o New program bin/unshunt to safely move shunted messages back
          into the appropriate processing queue.

        o New program bin/inject for sending a plaintext message into
          the incoming queue from the command line.

        o New cron script cron/disabled for periodically culling the
          disabled membership.

        o bin/list_members has grown some new command line switches
          for filtering on different criteria (digest mode, disable
          mode, etc.)

        o bin/remove_members has grown the --fromall switch.

        o You can now do a bin/rmlist -a to remove an archive even
          after the list has been deleted.

        o bin/update removes the $prefix/Mailman/pythonlib directory.

        o bin/withlist grows a --all/-a flag so the --run/-r option
          can be applied to all the mailing lists.  Also, interactive
          mode is now the default if -r isn't used.  You don't need to
          run this script as "python -i bin/withlist" anymore.

        o There is a new script contrib/majordomo2mailman.pl which
          should ease the transition from Majordomo to Mailman.

    - MTA integration
        o Postfix integration has been made much more robust, but now
          you have to set POSTFIX_ALIAS_CMD and POSTFIX_MAP_CMD to
          point to the postalias and postmap commands respectively.

        o VERP-ish delivery has been made much more efficient by
          eliminating extra disk copies of messages for each recipient
          of a VERP delivery.  It has also been made more robust in
          the face of failures during chunk delivery.  This required a
          rewrite of SMTPDirect.py and one casualty of that rewrite
          was the experimental threaded delivery.  It is no longer
          supported (but /might/ be resurrected if there's enough
          demand -- or a contributed patch :).

        o A new site config variable SMTP_MAX_SESSIONS_PER_CONNECTION
          specifies how many consecutive SMTP sessions will be
          conducted down the same socket connection.  Some MTAs have a
          limit on this.

        o Support for VERP-ing confirmation messages.  These are less
          error prone since the Subject: header doesn't need to be
          retained, and they allow a more user friendly (and i18n'd)
          Subject: header.  VERP_CONFIRM_FORMAT, VERP_CONFIRM_REGEXP,
          and VERP_CONFIRMATIONS control this feature (only supported
          for invitation confirmations currently, but will be expanded
          to the other confirmations).

        o Several new list-centric addresses have been added:
          -subscribe and -unsubscribe are synonyms for -join and
          -leave, respectively.  Also -confirm has been added to
          support VERP'd confirmations.

    - Archiver
        o There's now a default page for the Pipermail archive link
          for when no messages have yet been posted to the list.

        o Just the mere presence of an X-No-Archive: is enough to
          inhibit archiving for this message; the value of the header
          is now ignored.

    - Configuring, building, installing
        o Mailman now has a new favicon, donated by Terry Oda.  Not
          all web pages are linked to the favicon yet though.

        o The add-on email package is now distributed and installed
          automatically, so you don't need to do this.  It is
          installed in a Mailman-specific place so it won't affect
          your larger Python installation.

        o The default value of VERP_REGEXP has changed.

        o New site configuration variables BADQUEUE_DIR and
          QRUNNER_SAVE_BAD_MESSAGES which describe where to save
          messages which are not properly MIME encoded.

        o configure should be more POSIX-ly conformant.

        o The Mailman/pythonlib directory has been removed, but a new
          $prefix/pythonlib directory has been added.

        o Regression tests are now installed.

        o The second argument to add_virtual() calls in mm_cfg.py are
          now optional.

        o DEFAULT_FIRST_STRIP_REPLY_TO now defaults to 0.

        o Site administrators can edit the Mailman/Site.py file to
          customize some filesystem layout policies.


2.1 alpha 4 (31-Dec-2001)

    - The administrative requests database page (admindb) has been
      redesigned for better usability when there are lots of held
      postings.  Changes include:
        o A summary page which groups held messages by sender email
          address.  On this page you can dispose of all the sender's
          messages in one action.  You can also view the details of
          all the sender's messages, or the details of a single
          message.  You can also add the sender to one of the list's
          sender filters.

        o A details page where you can view all messages, just those
          for a particular sender, or just a single held message.
          This details page is laid out the same as the old admindb
          page.

        o The instructions have been shorted on the summary and
          details page, with links to more detailed explanations.

    - Bounce processing
        o Mailman now keeps track of the reason a member's delivery
          has been disabled: explicitly by the administrator,
          explicitly by the user, by the system due to excessive
          bounces, or for (legacy) unknown reasons.

        o A new bounce processing algorithm has been implemented (we
          might actually understand this one ;).  When an address
          starts bouncing, the member gets a "bounce score".  Hard
          (fatal) bounces score 1.0, while soft (transient) bounces
          score 0.5.

          List administrators can specify a bounce threshold above
          which a member gets disabled.  They can also specify a time
          interval after which, if no bounces are received from the
          member, the member's bounce score is considered stale and is
          thrown away.

        o A new cron script, cron/disabled, periodically sends
          notifications to members who are bounce disabled.  After a
          certain number of warnings the member is deleted from the
          list.  List administrators can control both the number of
          notifications and the amount of time between notifications.

          Notifications include a confirmation cookie that the member
          can use to re-enable their subscription, via email or web.

        o New configuration variables to support the bounce processing
          are DEFAULT_BOUNCE_SCORE_THRESHOLD,
          DEFAULT_BOUNCE_INFO_STALE_AFTER,
          DEFAULT_BOUNCE_YOU_ARE_DISABLED_WARNINGS,
          DEFAULT_BOUNCE_YOU_ARE_DISABLED_WARNINGS_INTERVAL.

    - Privacy and security
        o Sender filters can now be regular expressions.  If a line
          starts with ^ it is taken as a (raw string) regular
          expression, otherwise it is a literal email address.

        o Fixes in 2.0.8 ported forward: prevent cross-site scripting
          exploits.

    - Mail delivery
        o Aliases have all been changed so that there's more
          consistency between the alias a message gets delivered to,
          and the script & queue runner that handles the message.

          I've also renamed the mail wrapper script to `mailman' from
          `wrapper' to avoid collisions with other MLM's.  You /will/
          need to regenerate your alias files with bin/genaliases, and
          you may need to update your smrsh (Sendmail) configs.a

          Bounces always go to listname-bounces now, since
          administration has been separated from bounce processing.
          listname-admin is obsolete.

        o VERP support!  This greatly improves the accuracy of bounce
          detection.  Configuration variables which control this feature
          include VERP_DELIVERY_INTERVAL, VERP_PERSONALIZED_DELIVERIES,
          VERP_PASSWORD_REMINDERS, VERP_REGEXP, and VERP_FORMAT.  The
          latter two must be tuned to your MTA.

        o A new alias mailman-loop@dom.ain is added which directs all
          output to the file $prefix/data/owner-bounces.mbox.  This is
          used when sending messages to the site list owners, as the
          final fallback for bouncing messages.

        o New configuration variable POSTFIX_STYLE_VIRTUAL_DOMAINS
          which should be set if you are using the Postfix MTA and
          want Mailman to play nice with Postfix-style virtual
          domains.

    - Miscellaneous
        o Better interoperability with Python 2.2.

        o MailList objects now record the date (in seconds since
          epoch) that they were created.  This is in a hidden
          attribute `created_at'.

        o bin/qrunner grows a -s/--subproc switch which is usually
          used only when it's started from mailmanctl.

        o bin/newlist grows a -l/--language option so that the list's
          preferred language can be set from the command line.

        o cron changes: admin reminders go out at 8am local time instead
          of 10pm local time.

    - Pipermail archiver
        o MIME attachments are scrubbed out into separate files which
          can be viewed by following a link in the original article.
          Article contains an indication of the size of the
          attachment, its type, and other useful information.

        o New script bin/cleanarch which can be used to `clean' an
          .mbox archive file by fixing unescaped embedded Unix From_
          lines.

        o New configuration variable ARCHIVE_SCRUBBER in
          Defaults.py.in which names the module that Pipermail should
          use to scrub articles of MIME attachments.

        o New configuration variable ARCHIVE_HTML_SANITIZER which
          describes how the scrubber should handle text/html
          attachments.

        o PUBLIC_ARCHIVE_URL has change its semantics.  It is now an
          absolute url, with the hostname and listname parts
          interpolated into it on a per-list basis.

        o Pipermail should now provide the proper character set in the
          Content-Type: header for archived articles.

    - Internationalization
        o Czech translations by Dan Ohnesorg.

        o The Hungarian charset has be fixed to be iso-8859-2.

        o The member options login page now has a language selection
          widget.

    - Building, configuration
        o email-0.96 package is required (see the misc directory).

        o New recipes for integrating Mailman and Sendmail,
          contributed by David Champion.


2.1 alpha 3 (22-Oct-2001)

    - Realname support
        o Mailman now tracks a member's Real Name in addition to their
          email address.

        o List members can now supply their Real Names when
          subscribing via the web.  Their Real Names are parsed from
          any thru-email subscriptions.

        o Members can change their Real Names on their options page,
          and admins can change members' Real Names on the membership
          pages.  Mass subscribing accepts "email@dom.ain (Real Name)"
          and "Real Name <email@dom.ain>" entries, for both
          in-text-box and file-upload mass subscriptions.

    - Filtering and Privacy
        o Reply-To: munging has been enhanced to allow a wider range
          of list policies.  You can now pre-strip any Reply-To:
          headers before adding list-specific ones (i.e. you can
          override or extend existing Reply-To: headers).  If
          stripping, the old headers are no longer saved on
          X-Reply-To:

        o New sender moderation rules.  The old `posters',
          `member_only_posting', `moderated' and `forbidden_posters'
          options have been removed in favor of a new moderation
          scheme.  Each member has a personal moderation bit, and
          non-member postings can be automatically accepted, held for
          approval, rejected (bounced) or discarded.

        o When membership rosters are private, responses to
          subscription (and other) requests are made more generic so
          that these processes can't be covertly mined for hidden
          addresses.  If a subscription request comes in for a user
          who is already subscribed, the user is notified of potential
          membership mining.

        o When a held message is approved via the admindb page, an
          X-Moderated: header is added to the message.

        o List admins can now set an unsubscribe policy which requires
          them to approve of member unsubscriptions.

    - Web U/I
        o All web confirmations now require a two-click procedure,
          where the first click gives them a page that allows them to
          confirm or cancel their subscription.  It is bad form for an
          email click (HTTP GET) to have side effects.

        o Lots of improvements for clarity.

        o The Privacy category has grown three subcategories.

        o The General options page as a number of subsection headers.

        o The Passwords and Languages categories are now on separate
          admin pages.

        o The admin subcategories are now formated as two columns in
          the top and bottom legends.

        o When creating a list through the web, you can now specify
          the initial list of supported languages.

        o The U/I for unsubscribing a member on the admin's membership
          page should be more intuitive now.

        o There is now a separate configuration option for whether the
          goodbye_msg is sent when a member is unsubscribed.

    - Performance
        o misc/mailman is a Unix init script, appropriate for
          /etc/init.d, and containing chkconfig hooks for systems that
          support it.

        o bin/mailmanctl has been rewritten; the `restart' command
          actually works now.  It now also accepts -s, -q, and -u
          options.

        o bin/qrunner has been rewritten too; it can serve the role of
          the old cron/qrunner script for those who want classic
          cron-invoked mail delivery.

        o Internally, messages are now stored in the qfiles directory
          primarily as pickles.  List configuration databases are now
          stored as pickles too (i.e. config.pck).  bin/dumpdb knows
          how to display both pickles and marshals.

    - Mail delivery
        o If a user's message is held for approval, they are sent a
          notification message containing a confirmation cookie.  They
          can use this confirmation cookie to cancel their own
          postings (if they haven't already been approved).

        o When held messages are forwarded to an explicit address
          using the admindb page, it is done so  in a message/rfc822
          encapsulation.

        o When a message is first held for approval, the notification
          sent to the list admin is a 3-part multipart/mixed.  The
          first part holds the notification message, the second part
          hold the original message, and the third part hold a cookie
          confirmation message, to which the admin can respond to
          approve or discard the message via email.

        o In the mail->news gateway, you can define mail headers that
          must be modified or deleted before the message can be posted
          to the nntp server.

        o The list admin can send an immediate urgent message to the
          entire list membership, bypassing digest delivery.  This is
          done by adding an Urgent: header with the list password.
          Urgent messages with an invalid password are rejected.

        o Lists can now optionally personalize email messages, if the
          site admin allows it.  Personalized messages mean that the
          To: header includes the recipient's address instead of the
          list's address, and header and footer messages can contain
          user-specific information.  Note that only regular
          deliveries can currently be personalized.

        o Message that come from Usenet but that have broken MIME
          boundaries are ignored.

        o If the site administrator agrees, list owners have the
          ability to disable RFC 2369 List-* headers.

        o There is now an API for an external process to post a
          message to a list.  This posting process can also specify an
          explicit list of recipients, in effect turning the mailing
          list into a "virtual list" with a fluid membership.  See
          Mailman/Post.py for details.

    - Building/testing/configuration
        o mimelib is no longer required, but you must install the
          email package (see the tarball in the misc directory).

        o An (as yet) incomplete test suite has been added.  Don't try
          running it in a production environment!

        o Better virtual host support by adding a mapping from the
          host name given in cgi's HTTP_HOST/SERVER_NAME variable to
          the email host used in list addresses.  (E.g. www.python.org
          maps to @python.org).

        o Specifying urls to external public archivers is more
          flexible.

        o The filters/ subdirectory has been removed.

        o There is now a `site list' which is a mailing list that must
          be created first, and from which all password reminders
          appear to come from.  It is recommended that this list be
          called "mailman@your.site".

        o bin/move_list is no longer necessary (see the FAQ for
          detailed instructions on renaming a list).

        o A new script bin/fix_url.py can be used with bin/withlist to
          change a list's web_page_url configuration variable (since
          it is no longer modifiable through the web).

    - Internationalization
        o Support for German, Hungarian, Italian, Japanese, and
          Norwegian have been added.

    - Miscellaneous
        o Lots of new bounce detectors.  Bounce detectors can now
          discard temporary bounce messages by returning a special
          Stop value.

        o bin/withlist now sports a -q/--quiet flag.

        o bin/add_members has a new -a/--admin-notify flag which can
          be used to inhibit list owner notification for each
          subscription.

    - Membership Adaptors
        o Internally, mailing list memberships are accessed through a
          MemberAdaptor interface.  This would allow for integrating
          membership databases with external sources (e.g. Zope or
          LDAP), although the only MemberAdaptor currently implemented
          is a "classic" adaptor which stores the membership
          information on the MailList object.

        o There's a new pipeline handler module called FileRecips.py
          which could be used to get all regular delivery mailing list
          recipients from a Sendmail-style :include: file (see List
          Extensibility bullet below).

          This work was sponsored by Control.com

    - List Extensibility
        o A framework has been added which can be used to specialize
          and extend specific mailing lists.  If there is a file
          called lists/<yourlist>/extend.py, it is execfile()'d after
          the MailList object is instantiated.  The file should
          contain a function extend() which will be called with the
          MailList instance.  This function can do all sorts of deep
          things, like modify the handler pipeline just for this list,
          or even strip out particular admin GUI elements (see below).

        o All the admin page GUI elements are now separate
          components.  This provides greater flexibility for list
          customization.  Also, each GUI element will be given an
          opportunity to handle admin CGI form data.

          This work was sponsored by Control.com

    - Topic Filters
        o A new feature has been added called "Topic Filters".  A list
          administrator can create topics, which are essentially
          regular expression matches against Subject: and Keyword:
          headers (including such pseudo-headers if they appear in the
          first few lines of the body of a message).

          List members can then `subscribe' to various topics, which
          allows them to filter out any messages that don't match a
          topic, or to filter out any message that does match a
          topic.  This can be useful for high volume lists where not
          everyone will be interested in every message.

          This work was sponsored by Control.com

2.1 alpha 2 (11-Jul-2001)

    - Building
        o mimelib 0.4 is now required.  Get it from
          http://mimelib.sf.net.  If you've installed an earlier
          version of mimelib, you must upgrade.

        o /usr/local/mailman is now the default installation
          directory.  Use configure's --prefix switch to change it
          back to the default (/home/mailman) or any other
          installation directory of your choice.

    - Security
        o Better definition of authentication domains.  The following
          roles have been defined: user, list-admin, list-moderator,
          creator, site-admin.

        o There is now a separate role of "list moderator", which has
          access to the pending requests (admindb) page, but not the
          list configuration pages.

        o Subscription confirmations can now be performed via email or
          via URL.  When a subscription is received, a unique (sha)
          confirm URL is generated in the confirmation message.
          Simply visiting this URL completes the subscription process.

        o In a similar manner, removal requests (via web or email
          command) no longer require the password.  If the correct
          password is given, the removal is performed immediately.  If
          no password is given, then a confirmation message is
          generated.

    - Internationalization
        o More I18N patches.  The basic infrastructure should now be
          working correctly.  Spanish templates and catalogs are
          included, and English, French, Hungarian, and Big5 templates
          are included.

        o Cascading specializations and internationalization of
          templates.  Templates are now search for in the following
          order: list-specific location, domain-specific location,
          site-wide location, global defaults.  Each search location
          is further qualified by the language being displayed.  This
          means that you only need to change the templates that are
          different from the global defaults.

          Templates renamed: admlogin.txt => admlogin.html
          Templates added: private.html

    - Web UI
        o Redesigned the user options page.  It now sits behind an
          authentication so user options cannot be viewed without the
          proper password.  The other advantage is that the user's
          password need not be entered on the options page to
          unsubscribe or change option values.  The login screen also
          provides for password mail-back, and unsubscription w/
          confirmation.

          Other new features accessible from the user options page
          include: ability to change email address (with confirmation)
          both per-list and globally for all list on virtual domain;
          global membership password changing; global mail delivery
          disable/enable; ability to suppress password reminders both
          per-list and globally; logout button.

          [Note: the handle_opts cgi has gone away]

        o Color schemes for non-template based web pages can be defined
          via mm_cfg.

        o Redesign of the membership management page.  The page is now
          split into three subcategories (Membership List, Mass
          Subscription, and Mass Removal).  The Membership List
          subcategory now supports searching for member addresses by
          regular expression, and if necessary, it groups member
          addresses first alphabetically, and then by chunks.

          Mass Subscription and Mass Removal now support file upload,
          with one address per line.

        o Hyperlinks from the logos in the footers have been removed.
          The sponsors got too much "unsubscribe me!" spam from
          desperate user of Mailman at other sites.

        o New buttons on the digest admin page to send a digest
          immediately (if it's non-empty), to start a new digest
          volume with the next digest, and to select the interval with
          which to automatically start a new digest volume (yearly,
          monthly, quarterly, weekly, daily).

          DEFAULT_DIGEST_VOLUME_FREQUENCY is a new configuration
          variable, initially set to give a new digest volume monthly.

        o Through-the-web list creation and removal, using a separate
          site-wide authentication role called the "list creator and
          destroyer" or simply "list creator".  If the configuration
          variable OWNERS_CAN_DELETE_THEIR_OWN_LISTS is set to 1 (by
          default, it's 0), then list admins can delete their own
          lists.

          This feature requires an adaptor for the particular MTA
          you're using.  An adaptor for Postfix is included, as is a
          dumb adaptor that just emails mailman@yoursite with the
          necessary Sendmail style /etc/alias file changes.  Some MTAs
          like Exim can be configured to automatically recognize new
          lists.  The adaptor is selected via the MTA option in
          mm_cfg.py

    - Email UI
        o In email commands, "join" is a synonym for
          "subscribe". "remove" and "leave" are synonyms for
          "unsubscribe".  New robot addresses are support to make
          subscribing and unsubscribing much easier:

          mylist-join@mysite
          mylist-leave@mysite

        o Confirmation messages have a shortened Subject: header,
          containing just the word "confirm" and the confirmation
          cookie.  This should help for MUAs that like to wrap long
          Subject: lines, messing up confirmation.

        o Mailman now recognizes an Urgent: header, which, if it
          contains the list moderator or list administrator password,
          forces the message to be delivered immediately to all
          members (i.e. both regular and digest members).  The message
          is also placed in the digest.  If the password is incorrect,
          the message will be bounced back to the sender.

    - Performance
        o Refinements to the new qrunner subsystem which preserves
          FIFO order of messages.

        o The qrunner is no longer started from cron.  It is started
          by a Un*x init-style script called bin/mailmanctl (see
          below).  cron/qrunner has been removed.

    - Command line scripts
        o bin/mailmanctl script added, which is used to start, stop,
          and restart the qrunner daemon.

        o bin/qrunner script added which allows a single sub-qrunner
          to run once through its processing loop.

        o bin/change_pw script added (eases mass changing of list
          passwords).

        o bin/update grows a -f switch to force an update.

        o bin/newlang renamed to bin/addlang; bin/rmlang removed.

        o bin/mmsitepass has grown a -c option to set the list
          creator's password.  The site-wide `create' web page is
          linked to from the admin overview page.

        o bin/newlist's -o option is removed.  This script also grows
          a way of spelling the creation of a list in a specific
          virtual domain.

        o The `auto' script has been removed.

        o bin/dumpdb has grown -m/--marshal and -p/--pickle options.

        o bin/list_admins can be used to print the owners of a mailing list.

        o bin/genaliases regenerates from scratch the aliases and
          aliases.db file for the Postfix MTA.

    - Archiver
        o New archiver date clobbering option, which allows dates to
          only be clobber if they are outrageously out-of-date
          (default setting is 15 days on either side of received
          timestamp).  New configuration variables:

          ARCHIVER_CLOBBER_DATE_POLICY
          ARCHIVER_ALLOWABLE_SANE_DATE_SKEW

          The archived copy of messages grows an X-List-Received-Date:
          header indicating the time the message was received by
          Mailman.

        o PRIVATE_ARCHIVE_URL configuration variable is removed (this
          can be calculated on the fly, and removing it actually makes
          site configuration easier).

    - Miscellaneous
        o Several new README's have been added.

        o Most syslog entries for the qrunner have been redirected to
          logs/error.

        o On SIGHUP, qrunner will re-open all its log files and
          restart all child processes.  See "bin/mailmanctl restart".

    - Patches and bug fixes
        o SF patches and bug fixes applied: 420396, 424389, 227694,
          426002, 401372 (partial), 401452.

        o Fixes in 2.0.5 ported forward:
            Fix a lock stagnation problem that can result when the
            user hits the `stop' button on their browser during a
            write operation that can take a long time (e.g. hitting
            the membership management admin page).

        o Fixes in 2.0.4 ported forward:
            Python 2.1 compatibility release.  There were a few
            questionable constructs and uses of deprecated modules
            that caused annoying warnings when used with Python 2.1.
            This release quiets those warnings.

        o Fixes in 2.0.3 ported forward:
            Bug fix release.  There was a small typo in 2.0.2 in
            ListAdmin.py for approving an already subscribed member
            (thanks Thomas!).  Also, an update to the OpenWall
            security workaround (contrib/securelinux_fix.py) was
            included.  Thanks to Marc Merlin.

2.1 alpha 1 (04-Mar-2001)

    - Python 2.0 or newer required.  Also required is `mimelib' a new
      library for handling MIME documents.  This will be bundled in
      future releases, but for now, you must download and install it
      (using Python's distutils) from

      http://barry.wooz.org/software/Code/mimelib-0.2.tar.gz

      You need mimelib 0.2 or better.

    - Redesigned qrunner subsystem.  Now there are multiple message
      queues, and considerable flexibility in file formats for
      integration with external systems.  The current crop of queues
      include:

      archive -- for posting messages to an archiver
      commands -- for incoming email commands and bounces
      in -- for list-destined incoming email
      news -- for messages outgoing to a nntp server
      out -- for messages outgoing to a smtp server
      shunt -- for messages that trigger unexpected exceptions in Mailman
      virgin -- for messages that are generated by Mailman

      cron/qrunner is now a long running script that forks off
      sub-runners for each of the above queues.  qrunner still plays
      nice with cron, but it is expected to be started by init at some
      point in the future.  Some support exists for parallel
      processing of messages in the queues.

    - Support for internationalization support merged in.  Original
      work done by Juan Carlos Rey Anaya and Victoriano Giralt.  I've
      tested about 90% of the web side, 50% of the email, and 50% of
      the command line / cron scripts.

      New scripts: bin/newlang, bin/rmlang

    - New delivery script `auto' for automatic integration with the
      Postfix MTA.

    - A bunch of new bounce detectors.

    Changes ported from Mailman 2.0.2 and 2.0.1:

    - A fix for a potential privacy exploit where a clever list
      administrator could gain access to user passwords.  This doesn't
      allow them to do much more harm to the user then they normally
      could, but they still shouldn't have access to the passwords.

    - In the admindb page, don't complain when approving a
      subscription of someone who's already on the list (SF bug
      #222409 - Thomas Wouters).

      Also, quote for HTML the Subject: text printed for held
      messages, otherwise messages with e.g. "Subject: </table>" could
      royally screw page formatting.

    - Docstring fix bin/newlist to remove mention of "immediate"
      argument (Thomas Wouters).

    - Fix for bin/update when PREFIX != VAR_PREFIX (SF bug #229794 --
      Thomas Wouters).

    - Bug fix release, namely fixes a buglet in bin/withlist affecting
      the -l and -r flags; also a problem that can cause qrunner to
      stop processing mail after disk-full events (SourceForge bug
      127199).

2.0 final (21-Nov-2000)

    No changes from rc3.

2.0 release candidate 3 (16-Nov-2000)

    - By popular demand, Reply-To: munging policy is now to always
      override any Reply-To: header in the original message, if
      reply_goes_to_list is set to "This list" or "Explicit Address"

    - bin/newlist given -q/--quiet flag instead of the <immediate>
      positional argument

    - Hopefully last fix to DEFAULT_URL not ending in a slash
      sensitivity

    - 2.0rc2 buglets fixed:
        o newlist argument parsing
        o updating with unlocked lists
        o HyperArch.py traceback when there's no
          Content-Transfer-Encoding: header

    - SourceForge bugs fixed:
        122358 (qmail-to-mailman.py listname case folding)

    - SourceForge patches applied:
        102373 (qmail-to-mailman.py listname case folding)

2.0 release candidate 2 (10-Nov-2000)

    - Documentation updates: start in the doc/ directory.

    - bin/withlist accepts additional command line arguments when used
      with the --run flag; bin/mmsitepass and bin/newlist accept
      -h/--help flags

    - bin/newlist has a -o/--output flag to append /etc/aliases
      suggestions to a specified file

    - SourceForge bugs fixed:
        116615 (README.BSD update), 117015 (duplicate messages on
        moderated posts), 117548 (exception in HyperArch.py), 117682
        (typos), 121185 (vsnprintf signature), 121591 and 122017
        (bogus link after web unsubscribe), 121811 (`subscribe' in
        Subject: doesn't get archived)

    - SourceForge patches applied:
        101812 (securelinux_fix.py contrib), 102097 (fix for bug
        117548), 102211 (additional args for withlist), 102268 (case
        insensitive Content-Transfer-Encoding:)

2.0 release candidate 1 (23-Oct-2000)

    - Bug fixes and security patches.

    - Better html rendition of articles in non us-ascii charsets
      (Jeremy Hylton).  See VERBATIM_ENCODING variable in
      Defaults.py.in for customization.

2.0 beta 6 (22-Sep-2000)

    - Building
        o Tested with Python 1.5.2, Python 1.6, and Python 2.0 beta 1.
          Conducted on RH Linux 6.1 only, but should work
          cross-platform.

        o Configure now accepts --with-username, --with-groupname,
          --with-var-prefix flags.  See `configure --help' or the
          INSTALL file for details.

        o Setting the CFLAGS environment variable before invoking
          configure now works.

        o The icons are now copied into $prefix/icons at install time.
          Patch by David Champion.

    - Standards
        o Compliance with RFC 2369 (List-*: headers).  Patch by
          Darrell Fuhriman.  List-ID: header is kept for historical
          reasons.

        o Fixes by Jeremy Hylton to Pipermail in support of non-ASCII
          charsets, based on the Content-Type: and encoded-words in
          the original message.  Mail headers are now decoded as per
          RFC 2047.

        o Many more bounce formats are detected: Microsoft's SMTPSVC,
          Compuserve, GroupWise, SMTP32, and the more generic
          SimpleMatch (which catches lots of similar but slightly
          different formats).

    - Defaults
        o Email addresses can now be obscured in Pipermail archives by
          setting mm_cfg.ARCHIVER_OBSCURES_EMAILADDRS to 1 (obscuring
          is turned off by default).  Patch provided by Chris Snell.

        o The default NNTP host can now be set by editing
          mm_cfg.DEFAULT_NNTP_HOST.  Patch by David Champion.

        o The default archiving mode (public/private) can now be set
          by editing mm_cfg.DEFAULT_ARCHIVE.  Patch by Ted Cabeen.

    - Web UI
        o The variable details pages in the administrators interface
          is now `live', i.e. there's a submit button on the details
          page.

        o A link to the administrative interface is placed in the
          footer of the general user pages (authentication still
          required, of course!)

        o The user options change results page has a link back to the
          user's main page.

        o In the admindb page (for dealing with held postings), the
          default forward address is now listname-owner instead of
          listname-admin.  This avoids bounce detection on the
          forwarded message.

    - Miscellaneous
        o Fixed config.db corruption problem when disk-full errors are
          encountered.

        o Command line scripts accept list names case-insensitively.

        o bin/remove_members takes a -a flag to remove all members of
          a list in one fell swoop.

        o List admin passwords must be non-empty.

        o Mailman generated passwords are slightly more mnemonic, and
          shouldn't have confusing character selections (i.e. `i'
          only, but no `1' or `l').

        o Crossposting to two gated mailing lists should be fixed.

        o Many other bug fixes and minor web UI improvements.

2.0 beta 5 (01-Aug-2000)

    - Bug fix release.  This includes a fix for a small security hole
      which could be exploited to gain mailman group access by a local
      user (not a mail or web user).

    - As part of the fix for the "cookie reauthorization" bug, only
      session cookies are used now.  This means that administrative
      and private archive cookies expire only when the browser session
      is quit, however an explicit "Logout" button has been added.

2.0 beta 4 (06-Jul-2000)

    - Bug fix release.

2.0 beta 3 (29-Jun-2000)

    - Delivery mechanism (qrunner) refined to support immediate
      queuing, queuing directly from MTA, and queuing on any error
      along the delivery pipeline.  This means 1) that huge lists
      can't time out the MTA's program delivery channel; 2) it is much
      harder to completely lose messages; 3) eventually, qrunner will
      be elaborated to meter delivery to the MTA so as not to swamp
      it.  The tradeoff is in more disk I/O since every message coming
      into the system (and most that are generated by the system) live
      on disk for some part of their journey through Mailman.

      For now, see the Default.py variables QRUNNER_PROCESS_LIFETIME
      and QRUNNER_MAX_MESSAGES for primitive resource management.

      The API to the pipeline handler modules has changed.  See
      Mailman/Handlers/HandlerAPI.py for details.

    - Revamped admindb web page: held messages are split into headers
      and bodies so they are easier to vette; admins can now also
      preserve a held message (for spam evidence gathering) or forward
      the message to a specified email address; disposition of held
      messages can be deferred; held messages have a more context
      meaningful default rejection message.

    - Change to the semantics for `acceptable_aliases' list
      configuration variable, based on suggestions by Harald Meland.

    - New mm_cfg.py variables NNTP_USERNAME and NNTP_PASSWORD can be
      set on a site-wide basis if connection to your nntpd requires
      authentication.

    - The list attribute `num_spawns' has been removed.  The mm_cfg.py
      variables MAX_SPAWNS, and DEFAULT_NUM_SPAWNS removed too.

    - LIST_LOCK_LIFETIME cranked to 5 hours and LIST_LOCK_TIMEOUT
      shortened to 10 seconds.  QRUNNER_LOCK_LIFETIME cranked up to 10
      hours.  This should decrease the changes for bogus and harmful
      lock breaking.

    - Resent-to: is now one of the headers checked for explicit
      destinations.

    - Tons more bounce formats are recognized.  The API to the bounce
      modules has changed.

    - A rewritten LockFile module which should fix most (hopefully all)
      bugs in the locking machinery.  Many improvements suggested by
      Thomas Wouters and Harald Meland.

    - Experimental support (disabled by default) for delivering SMTP
      chunks to the MTA via multiple threads.  Your Python executable
      must have been compiled with thread support enabled, and you
      must set MAX_DELIVERY_THREADS in mm_cfg.py.  Note that this may
      not improve your overall system performance.

    - Some changes and additions to scripts: bin/find_member now
      supports a -w/--owner flag to match regexps against mailing list
      owners; bin/find_member now supports multiple regexps;
      cron/gate_news command line option changes; new script
      bin/dumbdb for debugging purposes; bin/clone_member can now also
      remove the old address and change change the list owner
      addresses.

    - The News/Mail gateway admin page has a button that lets you do
      an explicit catchup of the newsgroup.

    - The CVS repository has been moved out to SourceForge.  For more
      information, see the project summary at

      http://sourceforge.net/project/?group_id=103

    - Lots 'o bug fixes and some performance improvements.

2.0 beta 2 (07-Apr-2000)

    - Rewritten gate_news cron script which should be more efficient
      and avoid race and locking problems.  Each list now maintains
      its own watermark, and when you use the admin CGI script to turn
      on gating from Usenet->mail, an automatic mass catch up is done
      to avoid flooding the mailing list.  cron/gate_news's command
      line interface has also changed.  See its docstring for
      details.

    - A new cron script called qrunner has been added to retry message
      deliveries that fail because of temporary smtpd problems.

    - New command line script called bin/list_lists which does exactly
      that: lists all the mailing lists on the system (much like the
      listinfo CGI does).

    - bin/withlist is now directly executable, however if you want to
      use python -i, you must still explicitly invoke it.
      bin/withlist also now cleans up after itself by unlocking any
      locked lists.  It does NOT save any dirty lists though - you
      must do this explicitly.

    - $prefix permissions (and all subdirs) must now be 02775.
      bin/check_perms has been updated to fix all the subdir
      permissions.

    - "make update" (a.k.a. bin/update) is run automatically when you
      do a "make install"

    - The CGI driver script now puts information about the Python
      environment into the logs/error file (but not the diagnostic web
      page).

    - Bug fixes and some performance improvements

2.0 beta 1 (19-Mar-2000)

    - Python 1.5.2 (or newer) is now required.

    - A new bundled auto-responder has been added.  You can now
      configure an autoresponse text for each list's primary
      addresses:

        listname@yourhost.com -- the general posting address
        listname-request@...  -- the automated "request bot" address
        listname-admin@...    -- the human administrator address

    - The standard UI now includes three logos at the bottom of the
      page: Dragon's Mailman logo, the Python Powered logo, and the
      GNU logo.  All point to their respective home pages.

    - It is now possible to set the Reply-To: field on lists to an
      arbitrary address.  NOTE: Reply-To: munging is generally
      considered harmful!  However for some read-only lists, it is
      useful to direct replies to a parallel discussion list.

    - There is a new message delivery architecture which uses a
      pipeline processor for incoming and internally generated
      messages.  Mailman no longer contains a bundled bulk-mailer;
      instead message delivery is handled completely by the MTA.  Most
      MTAs give a high enough priority to connections from the
      localhost that mail will not be lost because of system load, but
      this is not guaranteed (or handled) by Mailman currently.  Be
      careful also if your smtpd is on a different host than the
      Mailman host.  In practice, mail lossage has not be observed.

      For this reason cron/run_queue is no longer needed (see the
      UPGRADING file for details).

      Also, you can choose whether you want direct smtp delivery, or
      delivery via the command line to a sendmail-compatible daemon.
      You can also easily add your own delivery module.  See
      Mailman/Defaults.py for details.

    - A similar pipeline architecture for the parsing of bounce
      messages has been added.  Most common bounce formats are now
      handled, including Qmail, Postfix, and DSN.  It is now much
      easier to add new bounce detectors.

    - The approval pending architecture has also been revamped.
      Subscription requests and message posts waiting for admin
      approval are no longer kept in the config.db file, but in a
      separate requests.db file instead.

    - Finally made consistent the use of Sender:/From:/From_ in the
      matching of headers for such things as member-post-only.  Now,
      if USE_ENVELOPE_SENDER is true, Sender: will always be chosen
      over From:, however the default has been changed to
      USE_ENVELOPE_SENDER false so that From: is always chosen over
      Sender:.  In both cases, if no header is found, From_ (i.e. the
      envelope sender is used).  Note that the variable is now
      misnamed!  Most people want From: matching anyway and any are
      easily spoofable.

    - New scripts bin/move_list, bin/config_list

    - cron/upvolumes_yearly, cron/upvolumes_monthly, cron/archive,
      cron/run_queue all removed.  Edit your crontab if you used these
      scripts.  Other scripts removed: contact_transport, deliver,
      dumb_deliver.

    - Several web UI improvements, especially in the admin page.

    - Remove X-pmrqc: headers to prevent return reciepts for Pegasus
      mail users.

    - Security patch when using external archivers.

    - Honor "X-Archive: No" header by not putting this message in the
      archive.

    - Changes to the log file format.

    - The usual bug fixes.

1.1 (05-Nov-1999)

    - All GIFs removed.  See http://www.gnu.org/philosophy/gif.html
      for the reason why.

    - Improvements to the Pipermail archiver which make things faster.
      Primary change is that the .txt files are not gzipped on every
      posted message.  Instead, use the new cron script `nightly_gzip'
      to gzip the .txt file in batches (this means that the .txt file
      will lag behind the on-line archives a little).

    - From the C drivers programs, Python is invoked with the -S
      option.  This tells Python to avoid importing the site module,
      which can improve start up time of the Python process
      considerably.  Note that the command line script invocation has
      not been changed.

    - New configuration variables PUBLIC_EXTERNAL_ARCHIVER and
      PRIVATE_EXTERNAL_ARCHIVER which can contain a shell command
      string for os.popen().  This can be used to invoke an external
      archiver instead of the bundled Pipermail archiver.  See
      Defaults.py for details.

    - new script `bin/find_member' which can be used to search for a
      member by regular expression.

    - More child processes are reaped, which should eliminate most
      occurrences of zombie processes.

    - A few small miscellaneous bug fixes (including PR#99, PR#107)
      and improvements to the file locking algorithms.

1.0 (30-Jul-1999)

    - Configure script now allows $PREFIX (by default /home/mailman)
      to be permissions 02755.  Also, configure now tests for
      vsnprintf()

    - Workaround, taken from GNU screen, for systems missing
      vsnprintf()

    - Return-Receipt-To: and Disposition-Notification-To: headers are
      always removed from posted messages (they can be used to troll
      for list membership).

    - Workaround for MSIE4.01 (and possibly other versions) bug in the
      handling of cookies.

    - A small collection of other bug fixes.

1.0rc3 (10-Jul-1999)

    - new script bin/check_perms which checks (and optionally fixes)
      the permissions and group ownerships of the files in your
      Mailman installation.

    - Removed a bottleneck in the archiving code that was causing
      performance problems on highly loaded servers.

    - The code that saves a list's state and configuration database
      has been made more robust.

    - Additional exception handlers have been added in several places
      to alleviate problems with Mailman bombing out when it really
      would be better to print/log a helpful message.

    - The "password" mail command will now mail back the sender's
      subscription password when given with no arguments.

    - The embarrassing subject-prefixing bug present in rc2 has been
      fixed.

    - A small (but nice :) collection of other squashed bugs.

1.0rc2 (14-Jun-1999)

    - A security flaw in the CGI cookie mechanisms was discovered --
      the Mailman-issued cookies were easily spoofable, implying that
      e.g. admin access to all Mailman lists via the web interface
      could be compromised.  This flaw has now been fixed.

    - Handling of SMTP errors has been improved.

    - Both "Mass Subscription" via web admin interface and
      bin/add_members have been greatly sped up.

    - autoconf check for syslog has been revamped, and is now verified
      to work on SCO OpenServer 5.  If syslog can't be found, the C
      wrappers will compile, but without any syslog calls.

    - Various other bug fixes.

1.0rc1 (04-May-1999)

    - There is a new Mailman logo, contributed by The Dragon De
      Monsyne.  Please read the INSTALL file for information about
      installing the logo in a place your Web server can find it.

    - USE_ENVELOPE_SENDER is now set to 0 by default.  Turning this on
      caused problems for too many users; lists restricted to
      member-only posts were not matching the addresses correctly.

    - A revamped bin/withlist to be a little more useful.

    - A revamped cron/mailpasswds which groups users by virtual hosts.

    - The usual assortment of bug fixes.

1.0b11 (03-Apr-1999)

    - Bug fixes and improvements for case preservation of subscribed
      addresses.  The DATA_FILE_VERSION has been bumped to 14.

    - New script bin/withlist, useful for interactive debugging.

1.0b10 (26-Mar-1999)

    - New script bin/sync_members which can be used to synchronize a
      list's membership against a flat (e.g. sendmail :include: style)
      file.

    - bin/add_members and bin/remove_members now accept addresses on
      the command line with `-' as the value for the -d and -n
      options.

    - Added variable USE_ENVELOPE_SENDER to Defaults.py for site-wide
      configuration of address matching scheme.  With this variable
      set to true, the envelope sender (e.g. Unix "From_" header) is
      used to match addresses, otherwise the From: header is used.
      Envelope sender matching seems not to work on many systems.
      This variable is currently defaulted to 1, but may change to 0
      for the final release.

    - Reorganization of the membership management admin page.  Also
      member addresses are linked to their options page.  Only the
      `General' category has the admin password change form.

    - Major reorganization of email command handling and responses.
      `notmetoo' is the preferred email command instead of `norcv',
      although the latter is still accepted as an argument.  If more
      than 5 errors are found in the message, command processing is
      halted.

    - User options page now shows the user their case-preserved
      subscribed address as well.

    - The usual assortment of bug fixes.

1.0b9 (01-Mar-1999)

    - New bin scripts: clone_member, list_members, add_members (a
      consolidation of convertlist and populate_new_list which have
      been removed).

    - Two new readmes have been added: README.LINUX and README.QMAIL

    - New configure option --with-cgi-ext which can be used if your
      Web server requires extensions on CGI scripts.  The extension
      must include a dot (e.g. --with-cgi-ext=".cgi").

    - Many bug fixes, including the setgid problem that was causing
      mail to be lost on some versions of Linux.

1.0b8 (14-Jan-1999)

     - Bug fixes and workarounds for certain Linuxes.

     - Illegal addresses are no longer allowed to be subscribed, from
       any interface.

1.0b7 (31-Dec-1998)

     - Many, many bug fixes.  Some performance improvements for large
       lists.  Some improvements in the Web interfaces.  Some security
       improvements.  Improved compatibility with Python 1.5.

     - bin/convert_list and bin/populate_new_list have been replaced
       by bin/add_members.

     - Admins can now get notification on subscriptions and
       unsubscriptions.  Posts are now logged.

     - The username portion of email addresses are now case-preserved
       for delivery purposes.  All other address comparisions are
       case-insensitive.

     - New default SMTP_MAX_RCPTS that limits the number of "RCPT TO"
       SMTP commands that can be given for a single message.  Most
       MTAs have some hard limit.

     - "Precedence: bulk" header and "List-id:" header are now added
       to all outgoing messages.  The latter is not added if the
       message already has a "List-id:" header.  See RFC 2046 and
       draft-chandhok-listid-02 for details.

     - The standard (as of Python 1.5.2) smtplib.py is now used.

     - The install process now compiles all the .py files in the
       installation.

     - Versions of the Mailman papers given at IPC7 and LISA-98 are
       now included.

1.0b6 (07-Nov-1998)

     - Archiving is (finally) back in.

     - Administrivia filter added.

     - Mail queue mechanism revamped with better concurrency control.

     - For recipients that have estmp MTAs, set delivery notification
       status so that only delivery failure notices are sent out,
       inhibiting 4 hour and N day warning notices.

     - Now expire old unconfirmed subscription requests, rather than
       keeping them forever.

     - Added proposed standard List-Id: header, and our own
       X-MailmanVersion header.

     - Prevent havoc from attempts to subscribe a list to itself.  (!)

     - Refine mail command processing to prevent loops.

     - Pending subscription DB redone with better locking and cleaner
       interface.

     - posters functionality expanded.

     - Subscription policy more flexible, sensible, and
       site-configurable.

     - Various and sundry bug fixes.

1.0b5 (27-Jul-1998)

    - New file locking that should be portable and work w/ NFS.

    - Better use of packages.

    - Better error logging and reporting.

    - Less startup overhead.

    - Various and sundry bug fixes.


1.0b4 (03-Jun-1998)

    - A configure script for easy installation (Barry Warsaw)

    - The ability to install Mailman to locations other than
      /home/mailman (Barry Warsaw)

    - Use cookies on the admin pages (also hides admin pages from
      others) (Scott Cotton)

    - Subscription requests send a request for confirmation, which may
      be done by simply replying to the message (Scott Cotton)

    - Facilities for gating mail to a newsgroup, and for gating a
      newsgroup to a mailing list (John Viega)

    - Contact the SMTP port instead of calling sendmail (primarily for
      portability) (John Viega)

    - Changed all links on web pages to relative links where appropriate.
      (John Viega)

    - Use MD5 if crypt is not available (John Viega)

    - Lots of fixing up of bounce handling (Ken Manheimer)

    - General UI polishing (Ken Manheimer)

    - mm_html: Make it prominent when the user's delivery is disabled
      on his option page. (Ken Manheimer)

    - mallist:DeleteMember() Delete the option setings if any. (Ken
      Manheimer)

1.0b3 (03-May-1998)

    - mm_message:Deliverer.DeliverToList() added missing newline
      between the headers and message body.  Without it, any sequence
      of initial body lines that _looked_ like headers ("Sir: Please
      excuse my impertinence, but") got treated like headers.

    - Fixed typo which broke subscription acknowledgement message
      (thanks to janne sinkonen for pointing this out promptly after
      release).  (Anyone who applied my intermediate patch will
      probably see this one trigger patch'es reversed-patch
      detector...)

    - Fixed cgi-wrapper.c so it doesn't segfault when invoked with
      improper uid or gid, and generally wrappers are cleaned up a
      bit.

    - Prevented delivery-failure notices for misdirected subscribe-
      confirmation requests from bouncing back to the -request addr,
      and then being treated as failing requests.

      Implemented two measures.  Set the reply-to for the
      confirmation- request to the -request addr, and the sender to be
      the list admin.  This way, bounces go to list admin instead of
      to -request addr.  (Using the errors-to header wasn't
      sufficient.  Thanks, barry, for pointing out the use of sender
      here.)  Second, ignore any mailcommands coming from postmaster
      or non-login system type accounts (mailer-daemon, daemon,
      postoffice, etc.)

    - Reenabled admin setting of web_page_url - crucial for having
      lists use alternate names of a host that occupies multiple
      addresses.

    - Fixed and refined admin-options help mechanism.  Top-level visit
      to general-category (where the "general" isn't in the URL) was
      broken.  New help presentation shows the same row that shows on
      the actual options page.

    - cron/crontab.in crontab template had wrong name for senddigests.

    - Default digest format setting, as distributed, is now non-MIME,
      on urging of reasoned voices asserting that there are still
      enough bad MIME implementations in the world to be a nuisance to
      too many users if MIME is the default.  Sigh.

    - MIME digests now preserve the structure of MIME postings,
      keeping attachments as attachments, etc.  They also are more
      structured in general.

    - Added README instructions explaining how to determine the right
      UID and GID settings for the wrapper executables, and improved
      some of the explanations about exploratory interaction
      w/mailman.

    - Removed the constraint that subscribers have their domain
      included in a static list in the code.  We might want to
      eventually reincorporate the check for the sake of a warning
      message, to give a heads up to the subscriber, but try delivery
      anyway...

    - Added missing titles to error docs.

    - Improved several help details, including particularly explaining
      better how real_name setting is used.

    - Strengthened admonition against setting reply_goes_to_list.

    - Added X-BeenThere header to postings for the sake of prevention
      of external mail loops.

    - Improved handling of bounced messages to better recognize
      members address, and prevent duplicate attempts to react (which
      could cause superfluous notices to administrator).

    - Added __delitem__ method to mm_message.OutgoingMessage, to fix
      the intermediate patch posted just before this one.

    - Using keyword substitution format for more message text (ie,
      "substituting %(such)s into text" % {'such': "something"}) to
      make the substitutions less fragile and, presumably, easier to
      debug.

    - Removed hardwired (and failure-prone) /tmp file logging from
      answer.majordomo_mail, and generally spiffed up following janne
      sinkkonen's lead.

1.0b2 (13-Apr-1998)
1.0b1 (09-Apr-1998)

  Web pages much more polished
   - Better organized, text more finely crafted
   - Easier, more refined layout
   - List info and admin interface overviews, enumerate all public lists
     (via, e.g., http://www.python.org/mailman/listinfo - sans the
     specific list)
   - Admin interface broken into sections, with help elaboration for
     complicated configuration options

  Mailing List Archives
   - Integrated with a newer, *much* improved, external pipermail - to be
     found at http://starship.skyport.net/crew/amk/maintained/pipermail.html
   - Private archives protected with mailing list members passwords,
     cookie-fied.

  Spam prevention
   - New spam prevention measures catch most if not all spam without
     operator intervention or general constraints on who can post to
     list:
       require_explicit_destination option imposes hold of any postings
       that do not have the list name in any of the to or cc header
       destination addresses.  This catches the vast majority of random
       spam.
     Other options (forbidden_posters, bounce_matching_headers) provide
     for filtering of known transgressors.
   - Option obscure_addresses (default on) causes mailing list subscriber
     lists on the web to be slightly mangled so they're not directly
     recognizable as email address by web spiders, which might be
     seeking targets for spammers.

  Site configuration arrangement organized - in mailman/mailman/modules:
   - When installing, create a mailman/modules/mm_cfg.py (if there's not
     one already there), using mm_cfg.py.dist as a template.
     mm_default.py contains the distributed defaults, including
     descriptions of the values.  mm_cfg.py does a 'from mm_defaults.py
     import *' to get the distributed defaults.  Include settings in
     mm_cfg.py for any values in mm_defaults.py that need to be
     customized for your site, after the 'from .. import *'.
   See mm_cfg.py.dist for more details.

  Logging
   - Major operations (subscription, admin approval, bounce,
     digestification, cgi script failure tracebacks) logged in files
     using a reliable mechanism
   - Wrapper executables log authentication complaints via syslog

  Wrappers
   - All cgi-script wrapper executables combined in a single source,
     easier to configure.  (Mail and aliases wrappers separate.)

  List structure version migration
   - Provision for automatic update of list structures when moving to a
     new version of the system.  See modules/versions.py.

  Code cleaning
   - Many more module docstrings, __version__ settings, more function
     docstrings.
   - Most unqualified exception catches have been replaced with more
     finely targeted catches, to avoid concealing bugs.
   - Lotsa long lines wrapped (pet peeve:).

  Random details (not complete, sorry):
   - make archival frequency a list option
   - Option for daily digest dispatch, in addition to size threshhold
   - make sure users only get one periodic password notifcation message for
     all the lists they're on (repaired 1.0b1.1 varying-case mistake)
   - Fix rmlist sans-argument bug causing deletion of all lists!
   - doubled generated random passwords to four letters
   - Cleaned lots and lots of notices
   - Lots and lots of html page cleanup, including table-of-contents, etc
   - Admin options sections - don't do the "if so" if the ensuing list
     is empty
   - Prevent list subject-prefix cascade
   - Sources under CVS
   - Various spam filters - implicit-destination, header-field
   - Adjusted permissions for group access
   - Prevent redundant subscription from redundant vetted requests
   - Instituted centralize, robustish logging
   - Wrapper sources use syslog for logging (john viega)
   - Sorting of users done on presentation, not in list.
   - Edit options - give an error for non-existent users, not an options page.
   - Bounce handling - offer 'disable' option, instead of remove, and
     never remove without notifying admin
   - Moved subscribers off of listinfo (and made private lists visible
     modulo authentication)
   - Parameterize default digest headers and footers and create some
   - Put titles on cgi result pages that do not get titles (all?)
   - Option for immediate admin notifcation via email of pending
     requests, as well as periodic
   - Admin options web-page help
   - Enabled grouped and cascading lists despite implicit-name constraint
   - Changed subscribers list so it has its own script (roster)
   - Welcome pages: http://www.python.org/mailman/{admin,listinfo}/

0.95 (25-Jan-1997)
  - Fixed a bug in sending out digests added when adding disable mime option.
  - Added an option to not notify about bounced posts.
  - Added hook for pre-posting filters.  These could be used to
    auto-strip signatures.  I'm using the feature to auto-strip footers
    that are auto-generated by mail received from another mailing list.

0.94 (22-Jan-1997)
  - Made admin password work ubiquitously in place of a user password.
  - Added an interface for getting / setting user options.
  - Added user option to disable mime digests (digested people only)
  - Added user option to not receive your own posts (nondigested people only)
  - Added user option to ack posts
  - Added user option to disable list delivery to their box.
  - Added web interface to user options
  - Config number of sendmail spawns on a per-list basis
  - Fixed extra space at beginning of each message in digests...
  - Handled comma separated emails in bounce messages...
  - Added a FindUser() function to MailList.  Used it where appropriate.
  - Added mail interface to setting list options.
  - Added name links to the templates options page
  - Added an option so people can hide their names from the subscription list.
  - Added an answer_majordomo_mail script for people switching...

0.93 (18/20-Jan-1997)
  -  When delivering to list, don't call sendmail directly.  Write to a file,
     and then run the new deliver script, which forks and exits in the parent
     immediately to avoid hanging when delivering mail for large lists, so that
     large lists don't spend a lot of time locked.
  -  GetSender() no longer assumes that you don't have an owner-xxx address.
  -  Fixed unsubscribing via mail.
  -  Made subscribe via mail generate a password if you don't supply one.
  -  Added an option to clobber the date in the archives to the date the list
     resent the post, so that the archive doesn't get mail from people sending
      bad dates clumped up at the beginning or end.
  -  Added automatic error message processing as an option.  Currently
     logging to /tmp/bounce.log
  -  Changed archive to take a list as an argument, (the old way was broken)
  -  Remove (ignore) spaces in email addresses
  -  Allow user passwords to be case insensitive.
  -  Removed the cleanup script since it was now redundant.
  -  Fixed archives if there were no archives.
  -  Added a Lock() call to Load() and Create().  This fixes the
     problem of loading then locking.
  -  Removed all occurances of Lock() except for the ones in mailing
     list since creating a list
     now implicitly locks it.
  -  Quote single periods in message text.
  - Made bounce system handle digest users fairly.

0.92 (13/16-Jan-1997)
  -  Added Lock and Unlock methods to list to ensure each operation is atomic
  -  Added a cmd that rms all files of a mailing list (but not the aliases)
  -  Fixed subscribing an unknown user@localhost (confirm this)
  -  Changed the sender to list-admin@... to ensure we avoid mail loops.
  -  check to make sure there are msgs to archive before calling pipermail.
  -  started using this w/ real mailing lists.
  -  Added a cron script that scours the maillog for User/Host unknown errs
  -  Sort membership lists
  -  Always display digest_is_default option
  -  Don't slam the TO list unless you're sending a digest.
  -  When making digest summaries, if missing sender name, use their email.
  -  Hacked in some protection against crappy dates in pipermail.py
  -  Made it so archive/digest volumes can go up monthly for large large lists.
  -  Number digest messages
  -  Add headers/footers to each message in digest for braindead mailers
  -  I removed some forgotten debug statements that caused server errors
         when a CGI script sent mail.
  -  Removed loose_matches flag, since everything used it.
  -  Fixed a problem in pipermail if there was no From line.
  -  In upvolume_ scripts, remove INDEX files as we leave a volume.
  -  Threw a couple of scripts in bin for generating archives from majordomo's
     digest-archives.  I wouldn't recommend them for the layman, though, they
     were meant to do a job quickly, not to be usable.

0.91 (23-Dec-1996)
  -  broke code into mixins for managability
  -  tag parsing instead of lots of gsubs
  -  tweaked pipermail (see comments on pipermail header)
  -  templates are now on a per-list basis as intended.
  -  request over web that your password be emailed to you.
  -  option so that web subscriptions require email confirmation.
  -  wrote a first pass at an admin interface to configurable variables.
  -  made digests mime-compliant.
  -  added a FakeFile class that simulates enough of a file object on a
        string of text to fool rfc822.Message in non-seek mode.
  -  changed OutgoingMessage not to require its args in constructor.
  -  added an admin request DB interface.
  -  clearly separated the internal name from the real name.
  -  replaced lots of ugly, redundant code w/ nice code.
        (added Get...Email() interfaces, GetScriptURL, etc...)
  -  Wrote a lot of pretty html formatting functions / classes.
  -  Fleshed out the newlist command a lot.  It now mails the new list
        admin, and auto-updates the aliases file.
  -  Made multiple owners acceptable.
  -  Non-advertised lists, closed lists, max header length, max msg length
  -  Allowed editing templates from list admin pages.
  -  You can get to your info page from the web even if the list is closed.


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