Have some very preliminary Mailman version 3 testing started on the BALUG VM, notably for lists.balug.org General plan (at least shorter term) is to replace the existing soon to be unsupported Mailman 2 with Mailman 3.
So, testing on Mailman3 - presently have one list set up: balug-test3@lists.balug.org Note that it might possibly wink in and out of existence, and/or get reloaded, etc., but general intent is for it to mostly persist and have continuity through testing, And around/after completion of Mailman 2 to Mailman 3 migration, will probably fold it into existing balug-test@lists.balug.org list (which will then be Mailman 3).
At the moment, so far (probably) just email interface, with other bits to come.
So, subscribe, unsubscribe, etc. balug-test3-subscribe@lists.balug.org balug-test3-unsubscribe@lists.balug.org balug-test3-request@lists.balug.org
Note due to some limitations in how the MTA is configured with anti-spam, it will generally filter/reject/drop messages with empty bodies (presumed to be spam), so, to work around that, don't have an empty body. E.g. -request address, to send a command of help, put it in the body, or if in the subject, include a body of: end so it makes it past the anti-spam and gets properly processed. The existing Mailman 2 configuration has these MTA anti-spam configuration limitations noted on the relevant web pages, and the relevant help text, etc. ... but I haven't yet done any such customization on Mailman3.