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Greylisting, for one. You could also reasonably configure a filter to not land emails over a spam threshold. Given the amount and type of spam in my Gmail Spa
by lloeki 14y ago
Greylisting, for one.
You could also reasonably configure a filter to not land emails over a spam threshold.
Given the amount and type of spam in my Gmail Spam label, I'm quite sure there's a hard filter in place there too.
- haroldp 14y agoGreylisting does not throw anything out. It does the exact opposite. The mail server simply says, "I have a temporary problem, so I can't take this right now. Try again later" Mail servers are supposed to (and do) try again, at which time a greylisted message will be delivered. Accepting a message for delivery In Go Faith and then dropping it on the floor, is poor, lazy, cheap, RFC-breaking spam filtering.
- lloeki 14y agoWhat I mean is that greylisting is a trick mechanism where some mails, declared spam based on an unrelated and technical criteria, never reach the user's spam folder. This contradicts the 'spam should go to spam folder' point.