I host 2 secondary domains on my server and have troubles with mails and mailman.
Mail problem :
When I check with mail tester, I have 10/10 score but I can’t configure thunderbird or aquamail (android) to read emails, trying to self identification problem.
I have to connect to the rainloop app on the server.
Mailman or mailman 3 (still in developpement but seems “frozen” from many months) :
I would like to create 2 mailing list with secondary domain extension but I don’t know how to do it.
I try to understand those 2 links that seems to be a solution on mailman doc and rezo