I am following this guide on how to set up a mail server, Postfix, and one of the assumptions is that I should have an MX record for
mail.mydomain.com. Postfix Guide However, I only have an MX record for
mydomain.com, and when I try to DiG it, nothing appears.
I have set up everything, and it works, but it is a little bit alarming, I can telnet into
localhost 25 and send an email from anybody with the command
mail from: firstname.lastname@example.org, and it gets sent without incident. It also displays the recipients as
Do I need to somehow get an MX record for
mail.mydomain.com? If so, how do I do that?