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Q190041: XCON: SMTP Message ID May Be Incorrectly Truncated

Article: Q190041
Product(s): Microsoft Exchange
Version(s): WinNT:5.5
Operating System(s): 
Keyword(s): exc55sp2fix
Last Modified: 02-MAY-1999

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The information in this article applies to:

- Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When an Exchange Server computer generates a non-delivery report (NDR) for an
SMTP message, the message ID may be incorrectly truncated. For example, if an
NDR for a message came from the server yourserver.sub1.sub2.com, the message ID
should be as follows:

  <uniqueNumber@yourserver.sub1.sub2.com>

However, Exchange Server generates the following malformed message ID:

  <uniqueNumber@yourserver.sub1.sub>

CAUSE
=====

The structure that contains the message ID has 128 bytes allocated for the
message ID. Because the message ID is created as Unicode, only 64 characters are
allowed. The unique number portion of the message is 38 characters in length,
which leaves room for only 22 additional characters. If the fully qualified
domain name exceeds 22 characters in length, it will be truncated.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Exchange Server
version 5.5. For more information, please see the following article in the
Microsoft Knowledge Base:

  Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack




STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5.

Additional query words: SMTP messageID Internet Mail Connector IMC IMS
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Keywords          : exc55sp2fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : WinNT:5.5
Issue type        : kbbug
Solution Type     : kbfix

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