XCON: Incoming Attachments Lost from Wang X.400 Connector

 Last reviewed: February 12, 1998
Article ID: Q166586
This information applies to:
  • Microsoft Exchange Server, version 5.0 Service Pack 1

SYMPTOMS

When you send a message with attachments over a Wang X.400 Connector to a Microsoft Exchange Server version 5.0 with Service Pack 1 (SP1) installed, attachments are lost. You can open the mail message using any client, but no attachments are present. Wang sends a Winmail.dat file with the attachment. The Winmail.dat file and attachments are seen as bilaterally- defined attributes in the P2 portion of an ASN.1 parsed message. An example is shown below: 

   P2_Bilat_defined_prim [...attachment data here...]
   P2_Bilat_defined_prim [...IPM.Microsoft Mail.Note....]
The first line includes the attachment information and the second line contains the Winmail.dat attachment. The Winmail.dat attachment holds properties of the attachment such as file name and it's exact position in the message. These properties are described using Transport Neutral Encapsulation Format, or TNEF.

NOTE: This worked in Microsoft Exchange Server version 4.0 and in version 5.0 earlier than Service Pack 1.

CAUSE

The incoming Winmail.dat file from Wang does not include a display name property, PR_DISPLAY_NAME, as part of the description for the attachment. Previous versions of Microsoft Exchange Server corrected for the absence of this property.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0 SP1. 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 (without the spaces): 

   S E R V P A C K

Keywords          : kbfix5.00.sp2 XCON kbbug5.00.sp1 kb3rdparty
Version           : WinNT:5.0.sp1
Platform          : winnt
Issue type        : kbbug
Solution Type     : kbfix

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Last reviewed: February 12, 1998
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