Hi Walter,
would suggest to expand "mydestination" by "lists.ifkuk.org". Willi Am 01.02.2016 um 00:21 schrieb wal...@ifkuk.org: > Hey guys > > since three days I am stuck with a problem and it seems to me I am blind > for the solution by digging > into it so much, so I need your help to have a look at it please! > > our server is up and running dovecot/postfix on debian 8 for three years > by now, without any problems. > > I urgently needed to set up some mailinglists and choose mailman for it > (what else?). > > I thought everything went fine till I tried to test my installation and > discovered that, > when I try to send from an internal emailaddress (managed by the server > itself) I get an > "User doesn't exist" error and if I send an email from an external > service like gmail, > I get "relay access denied". > > Like I've said, I tried to fix this problem for over three days now and > can't see my mistake. > > I uploaded my config files at HowtoForge, where you can have a look at it: > https://www.howtoforge.com/community/threads/postfix-mailman-debian8.72052/ > > > Greetings and thank you in advance for your help > Walter >