[MM3-users] outgoing messages not sent in a busy loop

incoming messages are showing up in hyperkitty but not going out as emails to list members. i've tried enabling the following debug logging:

format: %(asctime)s (%(process)d) %(message)s datefmt: %b %d %H:%M:%S %Y propagate: no level: info path: mailman.log

[logging.smtp] level: DEBUG [logging.smtp-failure] level: DEBUG [logging.runner] level: DEBUG [logging.debug] level: debug [logging.smtp-failure] level: debug

with these options, if i run tail -f * in the log directory of mailman, i get the following in essentially a busy loop:

==> smtp.log <==
Mar 13 19:08:46 2024 (18) Using agent: <mailman.mta.bulk.BulkDelivery object at 0x7fef1c9ad050>

==> debug.log <==
Mar 13 19:08:46 2024 (17) [NNTPRunner] starting oneloop
Mar 13 19:08:46 2024 (17) [NNTPRunner] ending oneloop: 0
Mar 13 19:08:46 2024 (18) [OutgoingRunner] finishing filebase: 1710356926.1738262+0a50dc0e393ba4de10bcdadb5376d4330f670c77
Mar 13 19:08:46 2024 (18) [OutgoingRunner] doing periodic
Mar 13 19:08:46 2024 (18) [OutgoingRunner] committing transaction
Mar 13 19:08:46 2024 (18) [OutgoingRunner] checking short circuit
Mar 13 19:08:46 2024 (18) [OutgoingRunner] processing filebase: 1710356926.2733445+d044aeb93be86fbf662b6e0feffc89d0f2e4eb66
Mar 13 19:08:46 2024 (18) [OutgoingRunner] processing onefile
Mar 13 19:08:46 2024 (18) [outgoing] <function deliver at 0x7fef1cda27a0>: <CADJyiOV1RAth=3CkNoHJ1qTVzedzX8BG0k6iwe019jXau30pLw@mail.gmail.com>

==> smtp.log <==
Mar 13 19:08:46 2024 (18) Using agent: <mailman.mta.bulk.BulkDelivery object at 0x7fef1cb0f390>

which doesn't give me a lot to go on. anyone know what could be causing this or any way to get additional debug information?