On Sat, Apr 15, 2006 at 11:45:40PM +0100, Martyn Clark said:
> Hi
> I just run mail tests form link Steve was kind enough to send me and only
> one got through: this one 
> (Non-Virus): Attachment with a CLSID extension which may hide the real file
> extension.  This does not include the EICAR virus, however your mail server
> should still block this since the CLSID technique can be used to hide the
> true extension of a malicious file.
> 
> Is there a rule I can set somewhere to prevent this type of getting through?

That is entriely MTA dependant.  I could probably tell you how to do it
for exim, but I doubt that's on topic for this list.  I suggest
following up with a mailing list suitable for the MTA you use.

Take care,
-- 
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|  Stephen Gran                  | Sweet sixteen is beautiful Bess, And    |
|  [EMAIL PROTECTED]             | her voice is changing -- from "No" to   |
|  http://www.lobefin.net/~steve | "Yes".                                  |
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