Similar service like MAPS, do this ones really more incompetent. They have blocked my dedicated service IP, because one server in the same subnet had spammed once. They have blocked the entire subnet. SpamHaus replied quickly, but never fixed the problem and always reply that they do not have liability, only the ISP that blocks my emails based on their data. Perjury is crime, therefore saying I am a spammer because my IP is in the same subnet of an actual spammer. Imagine saying I don't a country because I don't a guy there. Spamers are responsible, as well as people who block messages by false positive spam flags.