MAIL FROM: $VALID_SOURCE
HELO
HELO $MY_DOMAIN->MAIL FROM test
HELO $MY_DOMAIN->MAIL FROM: <>
HELO $MY_DOMAIN->MAIL FROM: <$VALID_SOURCE
HELO $MY_DOMAIN->MAIL FROM: <$INVALID_SOURCE>
HELO $MY_DOMAIN->MAIL FROM: <$VALID_SOURCE>->RCPT TO: test
HELO $MY_DOMAIN->HELP
HELO $MY_DOMAIN->VRFY root
HELO $MY_DOMAIN->EXPN root
HELO $MY_DOMAIN->TURN
HELO $MY_DOMAIN->SOML FROM: <$VALID_SOURCE>
HELO $MY_DOMAIN->SAML FROM: <$VALID_SOURCE>
HELO $MY_DOMAIN->NOOP
EHLO $MY_DOMAIN
#HELO $MY_DOMAIN->ETRN test
#HELO $MY_DOMAIN->MAIL FROM: <$VALID_SOURCE>->RCPT TO: <$TARGET_DOMAIN:$VALID_SOURCE>
