Spam Filter ISP Forums : Winmail.dat exploit https://www.logsat.com/spamfilter/forums/ Sat, 18 Jul 2026 05:25:39 +0000 Fri, 04 Nov 2005 16:58:47 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.04 360 https://www.logsat.com/spamfilter/forums/RSS_post_feed.asp?TID=5373 <![CDATA[Spam Filter ISP Forums]]> https://www.logsat.com/spamfilter/forums/forum_images/web_wiz_forums.png https://www.logsat.com/spamfilter/forums/ <![CDATA[Winmail.dat exploit : SpamFilter will not look for keywords...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5373&PID=6734&title=winmaildat-exploit#6734 Author: LogSat
Subject: 5373
Posted: 04 November 2005 at 4:58pm

SpamFilter will not look for keywords within winmail.dat. Thatattachment contains RTF and other extra pieces of info used by Exchangeservers and Outlook clients. To most other email clients the file isjust an annoying attachment.

You are correct in stating that microsoft may add a message's fileattachments to the winmail.dat. I hope for Microsoft that they donot  do it often, as probably only their own Outlook client willbe able to decode them...

Unfortunately we do not have an answer on the antivirus question, as wehave yet to find one that has been included in the winmail.dat file.
]]> Fri, 04 Nov 2005 16:58:47 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5373&PID=6734&title=winmaildat-exploit#6734 <![CDATA[Winmail.dat exploit : Has anyone encountered this...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5373&PID=6731&title=winmaildat-exploit#6731 Author: Guests
Subject: 5373
Posted: 04 November 2005 at 1:32am

 

Has anyone encountered this file? When an Outlook user composes and sends a message using either Rich Text Format or HTML Format, Outlook automagically generates a file, winmail.dat, and attaches it to the end of the message. winmail.dat contains formatting information, in a human-unreadable form, that Outlook at receiving endl uses to display this email message correctly

according to microsoft, winmail.dat file can contain file attachments as well.

Don't know exact wording ... is called transparent mime?

my questions are: Does spamfilter-antivirus detect viruses in winmail.dat file.

Does keyword filter treat "encoded" contents in winmail.dat file??

]]> Fri, 04 Nov 2005 01:32:05 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5373&PID=6731&title=winmaildat-exploit#6731