TNEF is a Microsoft defined format for carrying additional information about a message (e.g. rich text formatting)
and generally appears as a "winmail.dat" attachment. Details are here:
http://msdn2.microsoft.com/en-us/library/ms530652.aspx
This is a basic dissector which handles the TNEF attributes and the MAPI properties (found in MAPIPROPS
TNEF attribute). It is not complete and requires further work to complete the dissection. However it will
dissect TNEF generated from Outlook (including messages with attachments).
It is registered under the appropriate BER OID (1.2.840.113556.3.10.1) for X.400 attachments and media
type ("application/ms-tnef") for MIME messages. For MIME messages, any content-transfer-encoding
(usually base64) needs to be removed before calling this dissector. There is a preference in the
MIME multipart dissector to do this.
svn path=/trunk/; revision=22312
Bill Meier