Force OL to avoid TNEF by code? RRS feed

  • Question

  • Hi,

    we did an OL addin that somewhat changes the message content. Sadly, some Outlook/Exchange systems are sending the messages using Winmail.dat in TNEF format. I know, there are hundreds of thousands google hits for that problem, but is it possible to prevent the messages affected by our plugin to NOT send using TNEF? Can I set a message flag or something that definitely prevents TNEF usage?

    I already set messge type to PlainText or HTML, but that does not seem to care. Some customers are blaming us although unaffected mails are also sent using TNEF.  I need to turn of this, otherwise our support will always bother us.

    Any idea?


    Friday, July 6, 2012 6:31 AM


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