[torradan]

In the past we used spam assassin, and it worked fine for the most part, occasionally throwing a legitimate spam into /dev/null. I'm not quite sure what they are using now.

I think the best bet is to add [SPAM] to the beginning, or at least spend a day, and add "friendly" domains. suchs as THIS ISP, ebay, paypal, amazon, aol (as much as i hate it), etc. Hell, there has to be a listing somewhere that has already been compiled they could get their cheap little hands on to import. Then give them somewhere to send the real spam emails to so that they also get blocked.