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Q199051: XFOR: Incoming SMTP Messages Missing To, From, and/or Subject

Article: Q199051
Product(s): Microsoft Exchange
Version(s): winnt:4.0,5.0,5.5
Operating System(s): 
Keyword(s): 
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

Clients receiving messages from Internet users may report that the message
fields To, From, and/or the Subject are populated with information.

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

This behavior is possible if the sending mail product does not provide this
information in the P2 (Body) of the message. This behavior can be reproduced in
the following manner.

NOTE: <CRLF> represents carriage-return/line-feed or the use of the ENTER
key.

  telnet <tcp/ip address of mail host> 25
  helo
  mail from: sender@example.microsoft.com
  rcpt to: recipient@example.microsoft.com
  data
  <crlf>
  .
  <crlf>

For the To, From, and Subject fields to be populated, the sending mailer must
populate that information in the data section. The behavior described in the
"Symptoms" section does not break any RFC; however, it is not a recommended,
preferred, nor appreciated behavior for a mail system to engage in.

Additional query words:

======================================================================
Keywords          :  
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : winnt:4.0,5.0,5.5
Issue type        : kbprb

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