### 3.16 POP3 Daemon ¶

The `pop3d` daemon implements the Post Office Protocol Version 3 server.

`pop3d` has two operation modes:

Inetd

  The server is started from `/etc/inetd.conf` file:

      pop3  stream tcp nowait  root  /usr/local/sbin/pop3d pop3d

  This is the default operation mode.

Standalone

  The server runs as daemon, forking a child for each new connection.

The server operation mode is configured using `mode` statement (see mode).