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Installing and uninstalling the mail servers

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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