New AT&T Fiber installation: How to get port 25 unblocked?
I am running a postfix SMTP server at home, I need it for my security system. Before AT&T, I was using Comcast Internet, and was able to run my email server with no problems. However, when I switched to AT&T, port 25 was not accessible. I need port 25 to be unblocked (No, using port 587 or 465 is not an option). How can I do this?