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killing virus e-mails with file types



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As Martin Pitt mentioned here, you can filter on the file types of 
attachments to e-mails to eliminate the "Microsoft Upgrade" e-mail 
attachments.  

I do it in an even simpler way (keep in mind I don't really have bandwidth 
limitations).  I have my mail filter (kmail) set up so it trashes any mail 
message with the string ".exe", ".pif", ".bat", or ".scr".  

I also eliminate messages containing ".com", but in those messages, I require 
that they _don't_ contain "http" to prevent killing messages because of a 
link.

I guess I could see why someone who developed in windows might be getting 
.bat or .scr files (I assume .scr is an extension for windows scripts?).  
However, I can't think of any legitimate reason for someone to send me an 
executable file.  Any legit executable is going to be bigger than most people 
are going to want to receive via e-mail anyway.  That's what the web is for.

Craig Steffen

- -- 
craig@craigsteffen.net
public key available at http://www.craigsteffen.net/GPG/
current goal: use a CueCat scanner to inventory my books
career goal: be the first Vorlon Time Lord
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