POP2D(8)

NAME
pop2d - remote maildrop access server

SYNOPSIS
/usr/sbin/in.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 /var/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 /var/spool/pop. The syntax for the HOST command is: HOST <hostname>
Example:    HOST fennario.ucdavis.edu
this will open the file at /var/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
/var/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
/var/spool/mail/*    UNIX FromSPACE delimited maildrops
/var/spool/pop/*    BSMTP formatted maildrops

SEE ALSO
pop2d(8)

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The POP2 standard has been superseded by Post Office Protocol Version 3 (POP3), described in RFC1081.