Yep, I second Jonathan's remarks, get rid of SPEWS. They are what I would say, much to aggressive with the entries that they list. I just don't trust the data that SPEWS spews (Ha! I made a funny!).
I would certainly continue to use RBL's and block certain sites outright, that's what I do now. But I wouldn't use SPEWS as one of those RBL's.
Just my opinion. Andy
Especially since they've gone *way* beyond blocking mail servers - they will drop an entire /24 into their list because an IP in that block was hosting *images* that were used in a spam. Not even intentionally. (Not one single piece of mail came out of this block) That's just ridiculous, IMHO. There's "collateral damage" and then there's just plain silliness.
Rejecting domains that don't exist and rejecting mail for invalud users and letting SpamAssassin handle the rest has been a wonderful solution for us. :-)
