I am trying to set up my first postfix server and have been running into hurdles all along the way.
my latest hurdle is this... email is not showing up.
i switched my mx record to point mail.domain.com to the external ip of my firewall.
i have set up the rules on my fw to allow pop and smtp traffic to the internal ip of the postfix server.
in the main.cf file i have added 'mail.domain.com' to the 'mydestination =' line
if i ping mail.domain.com it returns the value 'unknown host' its been >24hrs since i changed the mx record so could this be dns just not being updated yet?
also i know my fw blocks icmp but i don't see anything in the logs and 'unknown host' doesn't lead me to believe it has even got that far. the more i type the more it sounds like dns.