Doug Hardie via Postfix-users: > > On Feb 8, 2024, at 01:56, Matus UHLAR - fantomas via Postfix-users > > <postfix-users@postfix.org> wrote: > > > > On 07.02.24 21:51, Christophe Kalt via Postfix-users wrote: > >> +1 on setting up SRS, it helps with Gmail and I believe ARC does too > >> (although I don't have hard data on this). Interesting note about postgrey, > >> I didn't think that was effective any longer but maybe it is. > > > > I have removed postgrey from servers I manage a few years ago. > > - without good exemption lists, you'll run into hours long waiting for > > email from various mail services that attempt multiple times from multiple > > IP addresses, e.g. microsoft or google. > > > > I implemented postscreen instead that has similar functionality but is a > > bit more safe to use. > > I implemented postscreen quite a while ago. I don't see where or > how it introduces a delay to force the originating MTA to queue > and try later.
Citing http://spike.porcupine.org/postfix-mirror/POSTSCREEN_README.html#after_220 "The main limitation of "after 220 greeting" tests is that a new client must disconnect after passing these tests (reason: postscreen is not a proxy). Then the client must reconnect from the same IP address before it can deliver mail. The following measures may help to avoid email delays:" Wietse _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
