XCON: Read or Delivery Reports Show OU2 and OU3 Values

When you send a message to an X.400 recipient with a Read or Delivery Notification request, you may receive back a report that looks like the following:

Exchange Server incorrectly handles a report coming back from a 1984 mode X.400 system. When the Exchange message transfer agent (MTA) receives the report, it looks for a Content.tag file to determine the content of the report. Because 1984 mode does not support the use of content tags, the MTA simply uses the O/R address and sends it to the information store. The information store then incorrectly switches any Domain Defined Attribute (DDA) type and value fields to OU2 and OU3.

If possible, use 1988 mode X.400 for communication between Exchange and another system. This will resolve the problem, because 1988 mode supports the use of content tags.

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: Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base: