Talk to admins: we are a big company. I'm quite certain that they
would ignore my request. As Marc puts it: I'm probably not in a
position to have these policies changed.
Mailman: Tried it, but I was too stupid to get it working within five
minutes. Accordingly I gave up. Now I tried again. => Will open
another thread about the issue I still have with that.
@David: I can't use alternatives while at work (except e-mail via
smart phone. But that is too cumbersome.)
@Bill: Regarding my list set-up: It's fairly vanilla Debian
configuration with virtual exim domains.