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Name

pop3d -- remote maildrop access server

Synopsis

/usr/sbin/in.pop3d

Description

Pop3d is a mailbox server based on the Internet RFC1225, Post Office Protocol Version 3. 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.

Pop3d listens for TCP requests on port 110. Once connected it expects single line commands terminated by a <CR-LF>.

Pop3d currently supports the following POP3 commands; the commands are case independent.

Command
Description
USER
specify user for maildrop access
PASS
specify password for maildrop access
APOP
specify user and hashed password for maildrop access
STAT
give message count and size of maildrop
LIST
list size of individual messages
RETR
retrieve a message
DELE
delete a message
NOOP
do nothing, return a positive response
LAST
give highest message number accessed
RSET
unmark messages marked for deletion
TOP
retrieve part of a message
UIDL
retrieve the unique ID for a message
QUIT
terminate session

The remaining optional command specified in RFC1225 (RPOP) is not implemented.

Files

/var/spool/mail/*
UNIX FromSPACE delimited maildrops

Author

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

Notes

The POP3 standard supersedes Post Office Protocol Version 2 (POP2), described in RFC937.

Maintainer of one verison of this daemon is Derric Scott, <dtscott@scott.net>, Scott Network Services, Inc. The latest version can be found at ftp://ftp.scott.net/pub/linux/mail.

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