Chihurumnaya Ibiam via Mailman-users writes:
On Sun, Feb 1, 2026 at 7:25?AM Stephen J. Turnbull <steve@turnbull.jp> wrote:
Is this a separate host (hardware, VM, or container) that handles ONLY mailman lists?
Yes, it's a separate host that handles only mailman lists, it doesn't handle other incoming mail.
I'll remove dovecot, and report back.
Good, that will make getting set up easier.
I recommend that you NOT have Mailman pass through Dovecot, because it will be confusing to anyone familiar with Mailman operations trying to help you. Normally, Mailman listens on 8024, which is routed directly by the MTA (Postfix, in your case).
I don't see mailman listening on 8024 from my end, the port isn't open.
Hm. Did you start Mailman?
If Mailman is started, what port is in your mailman.cfg file? (Search for "lmtp" (without the quotes) in that file, it will say what host and port Mailman is listening on.) Do not assume you know where that file is (normally /etc/mailman3/mailman.cfg). If you are starting Mailman via systemd, check the service file for a "-C conffile" option in the start command. If you are using the 'mailman' utility, cd to the directory where you normally start Mailman, and use "mailman info" to find out where the running Mailman thinks the configuration file is.
Too many things can go wrong. I recommend that you disable all the authentication until you have all mail flows working without authentication, then add authentication as you require for your applications.
I'll try this, thank you!
OK, let us know!
You mentioned that you wanted Dovecot to do authentication. I don't know if Mailman can do authentication itself. I think the Python module can, but I don't know how to set it up. I personally don't think it's necessary on a dedicated host where Mailman and the MTA can communicate over the loopback address, but if you do, let me know and I'll see what we can do.
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan