[lug] SPAM filters

[ryan.wheaton at attbi.com]

Hello.
     I've been thinking about installing some kind of company wide SPAM mail 
filter here at work, and was wondering if anyone had any suggesstions or great 
success stories.  I remember seeing some posts about SPAMAssasin, but i 
couldn't find what exactly it was compatable with.  Unfortunately here, we're 
using an Exhange server, and SPAMAssasin for Exchange costs $$$$.  
     Ideally, what i'd like to do is set something up on a linux box and just 
stick it in front of the exchange server to filter all that crap out (that's a 
real technical statement.)

thanks in advance,

-ryan