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Q160284: XFOR: Messages to 246 Character Addresses Return with NDR

Article: Q160284
Product(s): Microsoft Exchange
Version(s): winnt:4.0
Operating System(s): 
Keyword(s): kbusage
Last Modified: 11-APR-1999

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The information in this article applies to:

- Microsoft Exchange Server, version 4.0 
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SUMMARY
=======

Messages that are sent from one Microsoft Exchange Internet Mail Connector (IMC)
to another IMC with addresses that have more than 246 characters (before and
after the '@') might fail with Non-Delivery Report (NDR) from the Microsoft
Exchange System Attendant as "Unknown Host" rather than traveling through and
returning with a "User Unknown" error.

STATUS
======

Microsoft has confirmed this to be a problem in version 4.0 of Microsoft
Exchange. We are researching this problem and will post new information here in
the Microsoft Knowledge Base as it becomes available.

Additional query words:

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Keywords          : kbusage 
Technology        : kbExchangeSearch kbExchange400 kbZNotKeyword2
Version           : winnt:4.0
Issue type        : kbbug

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