Markus Grandpré writes:
How can I configure the list settings the way that emails intended for moderators are delivered only to them, and not to the owners/administrators of the list?
If the owners are few and well-trusted, you could make them superusers. There are a lot of reasons why that is unattractive, of course.
I think (without looking at the code) that the change you want is about 4 lines in two files if it's a global configuration. It becomes somewhat more complex if a list configuration. (Plus documentation, of course.) Both forms seem quite simple. I would definitely be willing to review a merge request if submitted. It would also be a suitable "easy"/"beginner" task (eg, to qualify for GSoC) in the tracker.
I'm a little reluctant to do it myself, because the pain point a couple of my large clients had is different, and more complex. Some of their owners wanted to delegate owner-only capabilities like mass (un)subscribe to their moderators, but were uncomfortable with making them owners. So I would prefer to look into that code when I have time to do the more complex task, and the "who gets moderator mail" patch could ride along "for free".
-- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan