Hello, i cant add @ IN MX 10 mail.example.org. (your ${MAILCOW_HOSTNAME}) the name “@” isnt work on my domain, what can i do?
@ IN MX 10 mail.example.org. (your ${MAILCOW_HOSTNAME})
@ stands for the main domain (no subdomain), maybe your interface requires the field just to be empty or some other placeholder symbol.
This should help https://youtu.be/o66UFsodUYo It has a step by step tutorial on how to do it