Microsoft KB Archive/190041

= XCON: SMTP Message ID May Be Incorrectly Truncated =

Article ID: 190041

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q190041



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:    However, Exchange Server generates the following malformed message ID:   



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:

191014 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

Keywords: kbbug kbfix kbqfe KB190041

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