Indeed. The problem is almost certainly most likely my macOS setup in some way. I will try to use 3.6 but I do not expect it will make a difference.
Gerben > On 5 Mar 2022, at 04:00, Wietse Venema <wie...@porcupine.org> wrote: > > Gerben Wierda: >> >>> On 4 Mar 2022, at 20:04, Bill Cole >>> <postfixlists-070...@billmail.scconsult.com> wrote: >>> >>> On 2022-03-04 at 06:20:27 UTC-0500 (Fri, 4 Mar 2022 12:20:27 +0100) >>> Gerben Wierda <gerben.wie...@rna.nl> >>> is rumored to have said: >>> >>>> I have upgraded my postfix 3.6 to postfix 3.7.0 as well as >>>> having upgraded my macOS on which postfix runs from 10.4 (Mojave) >>>> to 12 (Monterey) > > There has been no change in Postfix's event handling just about > $forever. And, no-one else is reporting that Postfix is stopping > to handle connections. From Postfix point of view, event handling > on MacOS is similar to what we did with FreeBSD 4.0 and earler. > > One thing to try is to compile and run the old Postfix source version > on the new operating system. I suppose that the opposite, building > Postfix 3.7.0 on the old MacOS releasem will not be feasible. > > Wietse