POP2D (8C)             UNIX Programmer's Manual            POP2D (8C)


NAME
	pop2d  --  remote maildrop access server

SYNOPSIS
	/etc/pop2d

DESCRIPTION
	Pop2d is a mailbox server based on the Internet RFC937,
	Post Office Protocol Version 2. The program allows remote
	access to UNIX maildrops found in /usr/spool/mail. The
	server requires user and password verification before a
	maildrop can be opened. The server can retrieve and delete
	messages from the maildrop on a per-message basis.

	Pop2d listens for TCP requests on port 109. Once connected
	it expects single line commands terminated by a <CR-LF>.

	Pop2d currently supports the following POP2 commands; the
	commands are case independent. In addition, the server
	supports one extension command, HOST, which allows access
	to BSMTP formatted maildrops in the directory /usr/spool/pop.
	The syntax for the HOST command is:   HOST <hostname>
	Example:	HOST fennario.ucdavis.edu
	this will open the file at /usr/spool/pop/fennario.ucdavis.edu

	Command			Description
	HELO			specify maildrop user and password
	FOLD			open a UNIX maildrop (FromSPACE delimited)
	HOST			open a BSMTP maildrop in /usr/spool/pop
	READ			switch to a message in a maildrop
	RETR			retrieve a message in a maildrop
	ACKS			save message just retrieved, switch to next
	ACKD			delete message just retrieved, switch to next
	NACK			save message just retrieved, prepare to resend
	QUIT			terminate session

FILES
	/usr/spool/mail/*	UNIX FromSPACE delimited maildrops
	/usr/spool/pop/*	BSMTP formatted maildrops

SEE ALSO
	pop3d(8C)

AUTHOR
	Katie Stevens, dkstevens@ucdavis.edu
	Information Technology -- Campus Access Point
	University of California, Davis

NOTES
	The POP2 standard has been superseded by Post Office Protocol
	Version 3 (POP3), described in RFC1081.





			August 29, 1990
