Alejandro Facultad writes:
Hi people,
Now I'm installing the Courier 0.48 in my Fedora OS, and because I need Authenticated SMTP, I just want to know if I have to open the ESMTP tcp port in my firewall or just the SMTP tcp/25 port in order to authenticate the
Authenticated SMTP uses the same port, port 25.
Perhaps you're referring to the message submission port, port 587. It's up to you to decide if you want to open it up.
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