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...39;m sorry, here: postconf -n https://pastebin.com/UQQhieMy postconf -Mf https://pastebin.com/AHEUSkfQ doveconf -n https://pastebin.com/s7DVY9XW > Make sure your MUA is setup to make a STARTTLS connection to Postfix's submission port. I don't see that in your logs. https://imgur.com/a/3MJXRUh This is the configuration. Afaik thats also the correct port for SMTP. I've also checked that all the ports are open on the server (via netstat): https://pastebin.com/tY6rSi8y I have (currently) no firewall installed so there aren't any ports blocked either. Since it's in an internal...

Postconf: https://pastebin.com/vTVn2UMr Doveconf: https://pastebin.com/nEpZrpzB all my logs from mail.(warn,err,info,log): https://pastebin.com/ccEVUqyd my messges log: https://pastebin.com/cXaEBmcH I'm not sure if you meant this about dict_nis_init but I've done what's explained here: https://unix.stackexchange.com/questions/244199/postfix-mail-logs-keep-showing-nis-domain-not-set