DNS Black list suggestions?

[Jim Mozley]

Eric Anderson wrote:
> A few years back, I tried a couple black lists, and was burned by them 
> blocking things that should not be blocked, so I stopped using them.
> 
> I've heard that they have come a long way - does anyone have any 
> preferences, warnings, etc?  I'm interested in free blacklists only..

I assume this is for email purposes i.e. blocking spam. I'd suggest 
using SpamAssassin. If gives the different blacklists weightings which 
one can alter or remove if it's a problem.

Jim Mozley