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Q153464: XFOR: Unexpected Text Attachment in Mail Received from Internet

Article: Q153464
Product(s): Microsoft Exchange
Version(s): winnt:4.0,5.0
Operating System(s): 
Keyword(s): kbusage
Last Modified: 31-MAR-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 4.0, 5.0 
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SYMPTOMS
========

When you receive mail by way of the Internet Mail Connector (IMC), there is a
file attachment with a name such as ATT00000.txt; the attachment contains only
text.

CAUSE
=====

A multipart/mixed MIME document is received that contains more than one text
section. Only the first text section appears in the message body; all remaining
text sections are interpreted as text file attachments.

STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 4.0. This problem has been corrected in the latest U.S. Service Pack for
Microsoft Exchange Server version 4.0. For information on obtaining the Service
Pack, query on the following word in the Microsoft Knowledge Base (without the
spaces):

  S E R V P A C K

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version
5.0. This problem has been corrected in the latest U.S. Service Pack for
Microsoft Exchange Server version 5.0. For information on obtaining the Service
Pack, query on the following word in the Microsoft Knowledge Base (without the
spaces):

  S E R V P A C K

MORE INFORMATION
================

This happens most commonly with an Internet mail client that is sending an
attachment and also appending an auto-signature. For example, here is a fragment
of a multi-part mime message:

  Content-Type: multipart/mixed;
  boundary="=====================_856378041==_"
  Content-Type: text/plain; charset="us-ascii"

This sentence will be seen in the body of the message.

  --=====================_856378041==_
  Content-Type: application/msword; name="WORD.DOC";
  x-mac-type="42494E41"; x-mac-creator="4D535744"
  Content-Transfer-Encoding: base64
  Content-Disposition: attachment; filename="WORD.DOC"

  0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAOwADAP7/CQAGAAAAAAAAAAAAAAABAAAAAQA
     AAAAAAAAA

  <Base64 MIME Encoding - Removed for Brevity>

  /v8JAAYAAAAAAAAAAAAAAAEAAAABAAAAAAAAAAAQAAACAAA=
  --=====================_856378041==_
  Content-Type: text/plain; charset="us-ascii"

This paragraph will be seen in the text file attachment. Frequently this text
contains the auto-signature text sent by Internet mail clients, such as Eudora
Light 3.0.

  --=====================_856378041==_--


Additional query words:

======================================================================
Keywords          : kbusage 
Technology        : kbExchangeSearch kbExchange500 kbExchange400 kbZNotKeyword2
Version           : winnt:4.0,5.0
Issue type        : kbbug
Solution Type     : kbfix

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