This article was previously published under Q315081
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If you send a message through an X.400 connector to an X.400 address that is similar to the following address, you may receive a non-delivery report (NDR) from a remote foreign message transfer agent (MTA):
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
NOTE: Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 2 (SP2).
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 3.
The problem can occur if the X.400 address contains (u) or (a) signs.