Jan-Pieter,
On my system, your message shows a header which contains:
X-message-flag: *** MICROSOFT OUTLOOK FATAL ERROR 15: PRESS ALT+F4 TO CONTINUE
This also appears in yellow in the Outlook session as a header section to the message viewer - is this part of your message, or something which my Outlook added? Google has exactly one incidence of this header, in a mailing list for NNTP...
Outlook will display the contents of an X-Message-Flag: header in a coloured box above the message. The sender can put whatever they want in this header. It's been adopted by some to display joke warning messages like the one above, or comments like "Get yourself a real mail client at [some URL]", as special behaviour for this header is only supported by Outlook.
Some details can be found at http://c2.com/cgi/wiki?MicrosoftOutlookExpress http://www.winnetmag.com/MicrosoftExchangeOutlook/Article/ArticleID/7694/7694.html http://web.archive.org/web/20030602161609/http://www.rodos.net/outlook/
I'm surprised this hasn't been exploited by virus authors yet. Something like:
X-message-flag: Outlook has found no viruses in this message
would probably trick a lot of people.
Cheers, Dave -- Dave O'Neill <[EMAIL PROTECTED]> Roaring Penguin Software Inc. +1 (613) 231-6599 ext. 104 http://www.roaringpenguin.com/ For CanIt technical support, please mail: [EMAIL PROTECTED] _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang

