Thought I'd add that not only do blacklists block 'spammers' they block any address they deem an "open relay". As the article states, one is at the mercy of the blacklist administrator, which means their moral judgments become yours. For example, some major blacklists felt Comcast and SBC didn't terminate spammers accounts quick enough so they blocked their entire class B address range, seriously hurting many SOHO's and small bussiness's. Then there is the example of the blacklist owner who after being found guilty of fraud (or something similar) went back to the office and blacklisted the entire internet, casuing all of his customers to stop recieving email. My personal opinion, stay as far away from blacklists as you can, they are evil things USUALLY run by quite evil people. I wouldn't trust them to tell me the time.

Nick Staff
nick.staff@comcast.net