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popd(8) System Manager's Manual popd(8) NAME popd - The POP server SYNOPSIS /usr/lib/mh/popd [-p portno] FLAGS Overrides the default TCP port. DESCRIPTION The popd server implements the Post Office Protocol (POP), as de- scribed in RFC1081 and RFC1082. Basically, the server listens on the TCP port named pop for connections. When it receives a connection re- quest from a client, it performs the following functions: Checks for client authentication by searching the POP password file in /usr/spool/pop. Sends the client any mail messages it is holding for the client. (The server holds the messages in /usr/spool/pop.) For historical reasons, the MH POP defaults to using the port named pop (port 109) instead of its newly assigned port named pop3 (port 110). To determine which port MH POP is using, check the value of the POPSER- VICE configuration option. (You can display the POPSERVICE configura- tion option by issuing any MH command with the -help option.) This op- tion shows the service port name. To find the port number, look in the /etc/services file for the service port name assigned to the POPSERVICE configuration option. The port number appears beside the service port name. FILES Specifies the POP database. RELATED INFORMATION Files: pop(4), popaka(8), popwrd(8) Documents: Post Office Protocol -- Version 3 (RFC-1081) and Post Office Protocol -- Version 3: Extended service offerings (RFC-1082) delim off popd(8)