Are you receiving WINMAIL.DAT files in your mail?

by Volker Weber

Josh Jacob explains the problem:

The file is a rich text (or MAPI) message that is sent from Outlook to Exchange. When Exchange sends the message to an outside server it writes the MAPI message as a MIME attachment. The unfortunate side effect of this plan is if the Outlook user has someone in their address book as a person who can receive "Rich Text" then the user will receive the TNEF file whether the user uses Outlook or not.

He does not only explain the problem, he also has a program to resolve it.


We suffer this problem on and off at work - our Notes users can't open them and think its Notes' fault - bah! Would love to find a windows version of this utility to allow me to help people out...or maybe we just continue to educate (read: "confuse") the sender that their settings are *$*#!

Colin Williams, 2004-02-09

Go ahead and love it. :-)

Volker Weber, 2004-02-09

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I explain difficult concepts in simple ways. For free, and for money. Clue procurement and bullshit detection.


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