You should be careful when opening those restrictions. Kletz for example uses .. as 
part of its attack to gain control of a command shell and execute files. Be sure you 
other IIS restrictions like the script directory are properly secured.

Mark
  Plus Pack for OWA 
  SecureLogoff for OWA
  http://www.messageware.net


-----Original Message-----
From: Jason Brown [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 18, 2002 11:12 AM
To: Exchange Discussions
Subject: RE: Some messages viewed in OWA 2000 give 404 errors?


Thanks Tom.  This article pointed me in the right direction.  Problem had to
do with URLscan blocking the url sequence '..' .  Had to open up the
URLscan.ini and remove the restriction.  
 

-----Original Message-----
From: Tom Meunier [mailto:[EMAIL PROTECTED]] 
Sent: Wednesday, July 17, 2002 4:41 PM
To: Exchange Discussions
Subject: RE: Some messages viewed in OWA 2000 give 404 errors?


Do the message subjects contain punctuation in the subject line that has
been denied by URLscan?

http://support.microsoft.com/default.aspx?scid=kb;EN-US;q309508



> -----Original Message-----
> From: Jason Brown [mailto:[EMAIL PROTECTED]]
> Posted At: Wednesday, July 17, 2002 02:08 PM
> Posted To: MSExchange Mailing List
> Conversation: Some messages viewed in OWA 2000 give 404 errors?
> Subject: Some messages viewed in OWA 2000 give 404 errors?
> 
> 
> Having this problem with random e-mails.  Sometimes even with
> read upon
> receipt notifications.   Sometime in plain text e-mails?
> This seems to be an issue with front-end servers because when 
> I connect to the back-end Exchange box I don't have this problem.
> No errors in event logs...   Any ideas?
> 
> TIA!
> 
> -Jason

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