>> Do you use that config on a commercial mail server? I don't mean to >> say that you shouldn't, I'm just wondering if you do. In a commercial >> environment, the penalty for a false positive is a customer unable to >> reach the company behind the server which just isn't tolerable > > there is *no way* to have never ever false positivies > > and without spam protection someone deletes your message > within the 500 spam mails each day as collateral damagae > > in case of a false positive: the sender get a bounce from his mailserver > in case of deleted: it was silently dropped > > chosse one.....
I think what happened is the postscreen deep protocol checks did such an excellent job of reducing spam on their own that I figured the increased chance of rejecting legitimate mail by using one or more IP lists wasn't worth dropping the small amount of remaining spam. - Grant