XCON: Incoming Attachments Lost from Messages Sent over a Wang X.400 Connector

When you send a message with attachments over a Wang X.400 Connector, 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: 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.

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.

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): 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):