I trying to configure Mail server on Mac and I almost did it... I can login. I can successfully send/receive emails to/from another emails withing the SAME domain. I can successfully send emails to DIFFERENT domain. But when I try to receive Email from DIFFERENT domain to my server domain - it's not work :( I tried to send it from Gmail and got following error: "Google tried to deliver your message, but it was rejected by the recipient domain 450 450 4.1.1"
I have registered a domain name that points to my server IP
My Mac connected to internet via router but I already moved it to DMZ zone (outside of router firewall), so it houldn't be a reason.
Please share your experience or your thoughts about it!