Okay, so Exim and Postfix act the same in their default configs unless one changes it. Mark (Dale), does your Postfix act the same way? I think it doesn't and maybe it's something you need to take a second look at??
On 23 December 2016 at 22:17, Richard Shetron <gue...@sgeinc.com> wrote: > Postfix is the same. I had to install a greylisting package to add > greylisting to postfix. > > On 12/23/2016 9:50 AM, Odhiambo Washington wrote: > >> >> On 23 December 2016 at 17:36, Richard Shetron <gue...@sgeinc.com >> <mailto:gue...@sgeinc.com>> wrote: >> >> Maybe they were using some type of grey listing. >> >> For those who don't know: >> Grey listing is where the target MTA rejects with a retry error code >> the email from a new source for some period of time. Every site can >> set their own delay. Most spammers won't retry so it gets rid of a >> lot of spam. Real email servers will accept the retry error (4xx) >> and retry after some prefigured time from a few seconds to an hour >> or more. The IP addresses are tracked and if retried after the time >> limit are white listed for anywhere from a few hours to a month or >> more. >> >> >> I know Exim will only treat a session as a failure if it gets 5xx. Does >> Postfix do the same? >> >> >> -- >> Best regards, >> Odhiambo WASHINGTON, >> Nairobi,KE >> +254 7 3200 0004/+254 7 2274 3223 >> "Oh, the cruft." >> > -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft." ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
