Darren Pilgrim a écrit : > Paweł Leśniak wrote: >> The worst is I also have ~500 IPs which I can't tell from logs >> (sender, recipient, ip, helo) >> whether I want those messages or not. > > They will filter themselves for you. Legitimate MTAs will retry dozens > to hundreds of times in 24 hours; however, zombies will only a try few > times--most only once or twice. If you run daily reports on your logs, > the worst case is a 1-day delivery delay for a very small amount of > legitimate email.
but if they still have a helo resolution dns, they will ultimately bounce after 4/5 days, which is worst than a straight reject.
