You are absolutely right about the master.cf. The bounce line looks like the following: bounce unix - - n - 0 discard
What is a good configuration for this? Also, what does all this mean essentially (in English)? On Monday, January 11, 2021, 5:40:51 PM PST, Viktor Dukhovni <postfix-us...@dukhovni.org> wrote: On Tue, Jan 12, 2021 at 01:10:56AM +0000, Bob Jones wrote: > Our mail server (kolab 16 with postfix) has gone into a loop of some > kind leading to constant retrying of bounced emails. Your master.cf file is botched, listing an invalid definition of the "bounce" service. You CANNOT replace the "bounce" service with the "discard" delivery agent. > Here is a segment of what I see in the maillog: > > Jan 12 00:36:14 mail postfix/discard[3091]: warning: unexpected attribute > nrequest from bounce socket (expecting: flags) > Jan 12 00:36:14 mail postfix/discard[3091]: warning: deliver_request_get: > error receiving common attributes -- Viktor.
