SPAM

I have had quite a bit of spam e-mail coming through my server. I have many different blacklists that I have found on the net and a long keyword list. I run iMail v10.2 and was hoping somebody out there could suggest a good RHS blacklist that would work with it. I currently have Spamhaus and a few other big lists, but I am open for suggestions for BL’s and Keyword lists. Any help would be wonderful!