Useful Spam Filter

[]SK[]

Came accross this today. Not tested myself but looks pretty good. Runs on spam assassin rules I think.

http://si20.com/

Review here: http://email.about.com/cs/winspamreviews/gr/spam_interceptr.htm

Cons
Spammers using whitelisted addresses get through

Isnt that the main purpose of a whitelist though?