Christian Schneider writes:
Is there an option to disable a list (except from resetting passwords and remove/disable mail aliases)?
Not really. It would be complicated, depending on exactly what features you want disabled. As far as posting goes, doing that at the MTA aliases stage is definitely preferred over setting a flag in Mailman somewhere. This not only saves CPU cycles for Mailman, but also for the MTA.
You can set the emergency moderation flag, and if you want to prevent the owners from reverting that you can remove the owner role from those members of the list (log in as superuser, find the list, pull down the Users menu and select "owners", delete the owners -- this does not delete the users, and if they are subscribers or moderators those roles will not be deleted). To prevent new subscriptions you can set the subscription option to approve. Of course then somebody has to clean up the held messages and subscriptions occasionally.
If not I'd like to hand this in as a feature request... xD
You should do that at https://gitlab.com/mailman/mailman, as "disable" could mean several different things when you consider subscriptions and archives.
I personally will not have time to work on this for quite a while, but if you do write up a feature request I'll put it on the list of GSoC tasks I'm composing.
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan