I am seeing this issue manifest as shunted Mailman messages. Below (and attached) is output seen in various logs when the problem occurs.
/var/log/mailman3/smtp.log Jun 01 06:22:53 2020 (1640) Peer: ('127.0.0.1', 47078) Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) handling connection Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) Data: b'LHLO mail-01.********.org' Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) Data: b'MAIL FROM:<malberti@********.org>' Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) sender: malberti@********.org Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) Data: b'RCPT TO:<********@********.org>' Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) recip: ********@********.org Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) Data: b'DATA' Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) Data: b'QUIT' Jun 01 06:22:53 2020 (1640) ('127.0.0.1', 47078) connection lost Jun 01 06:22:53 2020 (1640) Connection lost during _handle_client() /var/log/mailman3/mailman.log Jun 01 06:22:54 2020 (1639) No cached copy of the public suffix list found Jun 01 06:22:54 2020 (1639) Uncaught runner exception: module 'time' has no attribute 'clock' Jun 01 06:22:54 2020 (1639) Traceback (most recent call last): File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 173, in _one_iteration self._process_one_file(msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 266, in _process_one_file keepqueued = self._dispose(mlist, msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/runners/incoming.py", line 79, in _dispose process(mlist, msg, msgdata, start_chain) File "/usr/lib/python3/dist-packages/mailman/core/chains.py", line 79, in process link.function(mlist, msg, msgdata) File "/usr/lib/python3/dist-packages/mailman/chains/hold.py", line 147, in _process request_id = hold_message(mlist, msg, msgdata, SEMISPACE.join(reasons)) File "/usr/lib/python3/dist-packages/mailman/app/moderator.py", line 88, in hold_message request_id = requestsdb.hold_request( File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper return function(args[0], config.db.store, *args[1:], **kws) File "/usr/lib/python3/dist-packages/mailman/model/requests.py", line 100, in hold_request token = getUtility(IPendings).add(pendable, timedelta(days=5000)) File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper return function(args[0], config.db.store, *args[1:], **kws) File "/usr/lib/python3/dist-packages/mailman/model/pending.py", line 91, in add token = token_factory.new() File "/usr/lib/python3/dist-packages/mailman/utilities/uid.py", line 79, in new return self._next_unpredictable_id() File "/usr/lib/python3/dist-packages/mailman/utilities/uid.py", line 155, in _next_unpredictable_id x = random.random() + right_now % 1.0 + time.clock() % 1.0 AttributeError: module 'time' has no attribute 'clock' Jun 01 06:22:54 2020 (1639) SHUNTING: 1590992574.436434+66babc08367b6351481ae56e1789e3a6a13d28d7 ** Attachment added: "logs.txt" https://bugs.launchpad.net/ubuntu/+source/mailman3/+bug/1877701/+attachment/5379233/+files/logs.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877701 Title: Mailman3 3.2.2-1 is incompatible with Python3 3.8.2-0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mailman3/+bug/1877701/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs