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Yeah a lot of greylisting is naive and uses "sender", "recipient", and "IP" to discover repeats. If you're going to implement greylisting yourself it makes mor
by stevekemp 13y ago
Yeah a lot of greylisting is naive and uses "sender", "recipient", and "IP" to discover repeats.
If you're going to implement greylisting yourself it makes more sent to hash the sender+recipient pair, allowing IP addresses of the senders to change - which is what will happen with many of the bigger mail-hosts, gmail, hotmail, etc.