[Mailman-Users] Invalid From reply

[Martin Östlund]

Hello List.

I apoligize if this has been on the topic before, im new in the list.
I just got Mailman installed and (somewhat) configured.
When the list replies to a user, i.e when someone is about to subscribe,
it
sends from list-announce-request at my.hostname.com (my fqdn), when
actually
the list is under listname at another-domain.com, how can I configure it to

reply from another-domain.com instead?

Sorry for my poor gramatics.

Martin.