“*drug*”
“*acrobat*”
“*loan*”
“*download*”
“*debt*”
“*viagra*”
“*vicodin*”
“*Cialis*”
“*Pharmaceutical*”
“*orgasm*”
“*SEXUAL*”
“*photoshop*”
“*fuck*”
“*credit*”
“*success*”

Also I filter at the server, not the email application. This allows me to filter on the connect header line, which is far more effective.

Connect header filters:

“HELO -1*”
“HELO 1*”
“HELO 65.28.44.33″
“*212.78.85.54*”
“*fairgamemail*”
“*journey.com*”
“*.it”
“*friend*”
“*.cc”
“*.sg”
“*willshowyou*”
“*home.nl*”
“*services4younow.com*”
“*spicybubble.com*”
“*netsape*”
“*centrum.sk*”
“*rahnemahost.com*”
“*mistream.com*”
“*dialer*”
“*expressroses.com*”
“*user*
“*werhere4unow*”
“*bulldog*”
“*hostgator*”
“*direcpc.com*”
“*4younow.com*”
“*outbursthosting.com*”
“*adsl*”
“*.pl”
“*sofianet*”
“*.dhcp.*”
“*younow.net*”
“*dialin*”
“*.res.*”
“*amfam.com*”, RS “”
“*.dyn.*”
“*dsl*”
“*hsd1*”
“*.res.rr.com*”
“*gemoftheweb*”
“*tin.it*”
“*casino*”
“*.qwest.net*”
“* |*”
“*alltel.net*”