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

SYMPTOMS

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:

   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.