Once T52864: Upgrade GNU Mailman from 2.1 to Mailman3 is done, we need to clean up lots of stuff:
- Refactor puppet.
- Disable mailman2
- Remove the apache auth system and cut access to /private/ entierly
- Remove emails from old archives (Note: mm3 upgrade sometimes, like 0.01% fails to upgrade a mail, should we clean them up manually and delete? Should we keep those? How to find them?
- Delete all mm2 mail configs (with rmlist?)