To: recipient@testcertificates.gov
From: sender@testcertificates.gov
Subject: Valid Long Serial Number Test16
MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg="sha-256"; boundary="----88A572A201412BBDACCDBC0AE18E50F3"

This is an S/MIME signed message

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Content-Type: text/plain

This is a sample signed message.

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Content-Type: application/pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"

[encoded data, 4615 characters]
raHopoDv6NCK53VRrzp3TgeSRGZocImRrZk=

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