Paul Rubin writes:
'list_unsubscription_requests' not found.
ungettextImportError: cannot import name 'ungettext' from 'django.utils.translation'
self._stream:Sep 12 10:06:31 mail mailman[31159]: AttributeError: 'ReopenableFileHandler' object has no attribute '_stream'Sep 12
Please tell me where to start looking or adjusting.
At this point it's not a matter of "adjusting". There are too many errors in too many unrelated places: Mailman, Postorius, and Django. It appears your Mailman installation has been quite corrupted. My guess is in the process of recovering the host you applied OS upgrades to Python and/or reinstalled Mailman components, and the versions are now very much out of sync. Another possibility is that files were corrupted by the crash.
As Odhiambo Washington suggests in a parallel post, your best bet is to preserve your configuration files, Postgresql databases, and queue files (if any), wipe your Mailman installation and reinstall from scratch. I'd back up the Postgres database, of course, but Mailman should just "reattach" to it, applying any migrations automatically. I forget whether you need to run "mailman-web migrate" for Django but I'm pretty sure it's idempotent (you did back up Postgres, right?)
Steve