Postfix configuration is missing the system's mail hostname
I'm sorting out crazy about that question.
Dunno what to write down, why and where.
Just know my outgoing emails (POP) dont run.
Plz help me step by step. I tried all I could imagine to try. with no goal.
Using virtualmin with ubunt as showed in tutorial.
Your message is not very clear so if you can provide some more detail it would be helpful. Did you assign your hostname in your postfix configuration with the myhostname variable in /etc/postfix/main.cf?