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Originally Posted by abailey152
Why would spam filters block important mail? I use MailWasher, which marks a lot of spam as "Blacklisted" from it's own database. I have NEVER had to keep anything that is blacklisted. NTL, perhaps wouldn't even need to be as strict as this list, and they still could be a lot better than they are now.
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Hi
Even the very best spam filters aren't 100% perfect - even if 1 in 10000 mails (0.01%) were marked incorrectly, that translates to 2500 wrongly-diagnosed emails a day (if blocked at the NTL MTAs, which typically handle ~25 million messages in 24 hours), which is unacceptable from an organisation's point of view.
By contrast, using the above figures, a personal account recieving 50 emails a day would typically drop 2 emails a year.
It boils down to being a numbers game.
cheers