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Microsoft KB Archive/169695

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Knowledge Base

XCON: Invalid Originator Address When Sending to X.400

Article ID: 169695

Article Last Modified on 10/28/2006


  • Microsoft Exchange Server 4.0 Standard Edition

This article was previously published under Q169695


When you send a message from Microsoft Mail through Microsoft Exchange Server 4.0 to an address on an X.400 messaging system, a reply to this message may not be possible. This occurs if you (the Microsoft Mail user) are not a Custom Recipient on the Microsoft Exchange Server, which can happen if, for example, directory synchronization is not yet finished.


The message will arrive at the remote X.400 system with an invalid X.400 originator address in the message header fields. The X.400 address will only contain a DDA Type and a DDA Value, which contains the Microsoft Mail Address. For example:

   DDA Type=MS;DDA Value=Net/PO/User

This address is invalid because mandatory parts are missing. A valid address looks like this:

   C=Country;A=Admin;P=Private;O=Org;DDA Type=MS;DDA Value=Net/PO/User


Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):


Keywords: kbhotfixserver kbqfe kbbug kbfix kbusage KB169695