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Originally Posted by threadbare
i believe ntl mail filters use an IP blacklist not subject headers
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So are you saying that an IP blacklist cant block mail that is genuine ???
I use ordb, reverse dns check, header filters and spam asasin and I have had mails from my bank blocked by ip blacklists. All it takes is for a spammer to spoof the ip of there mail server and they get blocked. O.K. it can be unblocked, but not before mails get zapped.
I use all the spam detection methods above but I still only mark the mail as spam and sent it to a diferent folder. I have had multiple emails that have ended up in the spam folder that were perfectly o.k.
I am not for a moment saying that NTL should do nothing. I am saying that you need to be 100% sure that a mail is spam before you block it, and then only with the consent of the customer. Emails are private to the user and can sometimes be personal to. Some emails are even treated with the same legality as postal letters if they have digital sigs.
I wonder how many people would rant and rave on this site if they had a personal mail blocked ?