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This section describes installation and uninstallation of the SMPT server (Postfix server) and of the IMAP and POP3 servers.
By default, the mail servers are assigned the following port numbers:
Port | Protocol | Explanation | |
25 | tcp/udp | SMTP | Simple Mail Transfer Protocol |
465 | tcp/udp | SMTPS | SMTP e-mail submission via implicit TLS |
587 | tcp/udp | SMTP | SMTP e-mail submission via explicit TLS |
110 | tcp/udp | POP3 | Post Office Protocol - Version 3 |
143 | tcp/udp | IMAP | Internet Message Access Protocol |
993 | tcp/udp | IMAPS | IMAP via implicit TLS |
995 | tcp/udp | POP3S | POP3 via implicit TLS |