Hi everybody, it's me once again ;)
Finally I made it to set up some mailinglists. The notification about
manually added list members are send out reliably. Now my question: Does
anybody of you have a good hint for me of what could be the reason that
mailman system-notifications are send out correctly but every incoming
mail send out from a member to the list cannot be delivered through
postfix? Every mail ends up with mailer-daemon "unknown user".
Wich conf-files would be helpfull to publish here?
Thank you for your help in advance!