Mark Sapiro writes:
Of course it is logical. You, the person, are a member of the list so you post to the list should be treated as from a member regardless of which of your addresses it comes from.
Why is that a problem?
People are not particularly logical about this kind of thing. They want what they want at the moment (compare the discussion with Odhiambo where he wanted the same address to correspond to different users). People with multiple addresses frequently want to separate their outgoing messages as well as incoming messages into separate streams. (Eg, one of the addresses is for specific use on an anonymous list.) But in many cases what they want is as you say, "I" am subscribed so any of my addresses should do.
While your explanation that a (human) person who wants that behavior should link separate addresses to separate Users is a perfectly good technical answer, I would not expect typical folks to figure that out for themselves. I don't have a suggestion for a user-friendly UI for this; I think it's just a hard concept to grasp with the amount of effort we generally want to put into a mailing list subscription.
It might be a good idea to add this issue to the documentation on anonymous lists.
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan