HI! It seems that two of my messages to mailman were not forwarded back to me while others came through just fine. One recent example which was successfully delivered to mx2.opensuse.org (see logs below). Message-ID: <16891a5e-fa81-41ec-1d19-f7816ab1e214@stroeder.com> Ciao, Michael. 2021-06-15T18:54:51.636290+02:00 mx1 postfix/cleanup[6452]: 99E3B21493: message-id=<16891a5e-fa81-41ec-1d19-f7816ab1e214@stroeder.com> 2021-06-15T18:54:52.011315+02:00 mx1 postfix/qmgr[1794]: 99E3B21493: from=<michael@stroeder.com>, size=4283, nrcpt=1 (queue active) 2021-06-15T18:54:52.018747+02:00 mx1 postfix/smtpd[6450]: disconnect from mail1.hv.local[10.1.1.7] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7 2021-06-15T18:54:52.141691+02:00 mx1 unbound: [653:0] info: 127.0.0.1 . NS IN 2021-06-15T18:54:52.141769+02:00 mx1 unbound: [653:0] info: 127.0.0.1 . NS IN NOERROR 0.000000 1 525 2021-06-15T18:54:52.163731+02:00 mx1 unbound: [653:0] info: 127.0.0.1 mx1.opensuse.org. A IN 2021-06-15T18:54:52.432899+02:00 mx1 unbound: [653:0] info: 127.0.0.1 mx1.opensuse.org. A IN NOERROR 0.267891 0 50 2021-06-15T18:54:52.788450+02:00 mx1 postfix/smtp[6453]: Untrusted TLS connection established to mx2.opensuse.org[195.135.221.158]:25: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bi ts) key-exchange ECDHE (P-256) server-signature ECDSA (P-384) server-digest SHA384 2021-06-15T18:54:55.156828+02:00 mx1 postfix/smtp[6453]: 99E3B21493: to=<factory@lists.opensuse.org>, relay=mx2.opensuse.org[195.135.221.158]:25, delay=3.6, delays=0.42/0.06/0.75/2.3, dsn=2 .0.0, status=sent (250 2.0.0 Ok: queued as D7BD48C81)