What to put on MX record when using Ubuntu Posfix SMTP?
I configured SMTP postfix from Ubuntu 14.
I already reroute my domain from another site to use digitalocean namespace.
I also configured my digital ocean control panel and added my domain name, A, Cname but I do not know what to put on MX record?
Do I need to put something on MX record when I want to use SMTP postfix from Ubuntu 14?