# pop3p

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
CLIENTS
BUGS
SEE ALSO
AUTHORS

## NAME

pop3p - POP3 proxy gateway service

## SYNOPSIS

pop3p [-d] [-l[[@]logfile]] [-pport] [-iinternal_ip] [-eexternal_ip] [-hdefault_ip[:port]]

## DESCRIPTION

pop3p is POP3 gateway service to allow internal users to access external POP3 servers.

## OPTIONS

| -I |  | Inetd mode. Standalone service only.
| -d |  | Daemonize. Detach service from console and run in the background.
| -t |  | Be silenT. Do not log start/stop/accept error records.
| -u |  | Never look for username authentication.
| -e |  | External address. IP address of the interface the proxy should initiate connections from. By default, the system will decide which address to use in accordance with the routing table.
| -i |  | Internal address. IP address the proxy accepts connections to. By default, connections to any interface are accepted. It´s usually unsafe. Unix domain sockets can be specified with -iunix:/path/to/socket syntax (e.g., -iunix:/var/run/pop3p.sock). On Linux, abstract sockets use -iunix:@socketname syntax.
| -p |  | Port. Port proxy listens for incoming connections. Default is 110.
| -h |  | Default destination. It’s used if the target address is not specified by the user.
| -l |  | Log. By default logging is to stdout. If logfile is specified logging is to file. Under Unix, if ´@´ precedes logfile, syslog is used for logging.
| -S |  | Increase or decrease stack size. You may want to try something like -S8192 if you experience 3proxy crashes.

## CLIENTS

You can use any MUA (Mail User Agent) with POP3 support. Set the client to use internal_ip and port as a POP3 server. The address of the real POP3 server must be configured as a part of the POP3 username. The format for the username is username@server, where server is the address of the POP3 server and username is the user´s login on this POP3 server. The login itself may contain an ´@´ sign. Only cleartext authentication is supported, because challenge-response authentication (APOP, CRAM-MD5, etc.) requires a challenge from the server before we know which server to connect to.

## BUGS

Report all bugs to 3proxy@3proxy.org

## SEE ALSO

3proxy(8), ftppr(8), proxy(8), socks(8), tcppm(8), udppm(8), syslogd(8),
https://3proxy.org/

## AUTHORS

3proxy is designed by Vladimir 3APA3A Dubrovin (3proxy@3proxy.org)