I have three list admins each maintaining one list, thus three lists: E, H and S. All reports that some mails they release from Held messages are sent, some isn't.
In the logs (Mailman smtp.log and postfix log I can confirm that at least one of the lists (E) sent out another message to 559 recips at Sep 26 09:31:12 201 (UTC+2) so something is working.
The admin of list E explains that she have released mails that came out, but some mails isn't sent when she reases them. Among others a mail she released Sep 26 09:38.
I can also see in the Mailman Postfix log that Mailman received a mail from the Admin's e-mail address sender@foo.bar.
Sep 26 09:38:49 postfix postfix/smtpd[5527]: D8E6D1109026: client=gateway[172.19.199.1] Sep 26 09:38:49 postfix postfix/cleanup[6076]: D8E6D1109026: message-id=E7657360D6CFE64DBAC4E5D158511918873690FB@mailserver.foo.bar Sep 26 09:38:49 postfix postfix/qmgr[139]: D8E6D1109026: from=sender@foo.bar, size=19589, nrcpt=1 (queue active) Sep 26 09:38:49 postfix postfix/lmtp[6077]: D8E6D1109026: to=s@listserver.foo.bar, relay=172.19.199.2[172.19.199.2]:8024, delay=0.03, delays=0.01/0.01/0/0.01, dsn=2.0.0, status=sent (250 Ok) Sep 26 09:38:49 postfix postfix/qmgr[139]: D8E6D1109026: removed
I cannot find the mail-id in the Mailman smtp.log, however in the smtp.log I found that the mail was received
Sep 26 09:38:49 2017 (32) Peer: ('172.19.199.5', 49238) Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) handling connection Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) Data: b'LHLO mailgateway.foo.bar' Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) Data: b'MAIL FROM:sender@foo.bar' Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) sender: sender@foo.bar Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) Data: b'RCPT TO:s@listserver.foo.bar' Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) recip: s@listserver.foo.bar Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) Data: b'DATA' Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) Data: b'QUIT' Sep 26 09:38:49 2017 (32) ('172.19.199.5', 49238) connection lost Sep 26 09:38:49 2017 (32) Connection lost during _handle_client()
I don't see any release of the held mail not that it was sent out. Two hours later I see a a log message about a notification mail to the admin that another mail had been held, but not anything about the released mail neither in thge smtp.log nor the postfix log.
I don't know why it only works sometimes.
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Henrik Rasmussen