It appears that Benoit Panizzon via mailop <[email protected]> said: >You have to look at the goal of greylisting. The goal is to filter out >unwanted traffic sent by drones / trojans without proper queuing.
Right, so it only made sense to greylist hosts you've never seen before. >Because some sender do such strange things as using multiple sending ip >addresses some consider a /24 IPv4 or /64 IPv6 to be the same sending >IP. That helps but even though I think I invented greylisting about 20 years ago, I don't do it any more. A five second greet pause to newly seen sending IPs seems to catch about the same set of bots without the annoying delays and lost mail. R's, John _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
