How about using the Attachments= keyword to only accept certain types of 
attachments?

Francoise

On 10 May 2007 at 9:08, Bill Brown wrote:

> The spam filtering/mail security system we use for 70 school districts in 
> Western NY blocks attachments with extensions that Microsot has deemed to 
> be unsafe (See http://support.microsoft.com/kb/291369/en-us ), which 
> includes the extension .URL..  A teacher got dropped form a State Ed 
> listserv becuase we rejected (554  5.7.1 Attachments  with file extension 
> url are not accepted Message rejected by spam filter) the message at the 
> SMTP level.
> 
> Is there any advice I can pass on to the list owner on how to block that, 
> and other unsafe extensions, to prevent future problems and make the list 
> safer for all their subscribers?
> 
> 
> ---
> In the time it took to read this a Windows exploit was discovered.
> 
> 
> William Brown
> Web Development & Messaging Services
> Technology Services, WNYRIC, Erie 1 BOCES
> (716)821-7285

-- 
Francoise Becker

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