Being new to Linux I have followed this tutorial to set up a mail server:
Everything is working correctly however I am sending mail from: firstname.lastname@example.org
I want mail just being sent from email@example.com, however when I change this section:
myhostname = mail.example.com mydomain = example.com
myhostname = example.com mydomain = example.com
Mail is not received. :(
What is causing this ?
Also, is there a way to change mail being sent from root to another prefix?