# smtpp

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
CLIENTS
BUGS
SEE ALSO
AUTHORS

## NAME

smtpp - SMTP proxy gateway service

## SYNOPSIS

smtpp [-d] [-l[[@]logfile]] [-p port] [-i internal_ip] [-e external_ip] [-h default_ip[:port]]

## DESCRIPTION

smtpp is SMTP gateway service to allow internal users to access external SMTP servers.

## OPTIONS

| -I |  | Inetd mode. Standalone service only.
| -d |  | Daemonise. 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 interface proxy should initiate connections from. By default system will deside which address to use in accordance with routing table.
| -i |  | Internal address. IP address proxy accepts connections to. By default connection to any interface is accepted. It´s usually unsafe.
| -p |  | Port. Port proxy listens for incoming connections. Default is 25.
| -h |  | Default destination. It’s used if targed address is not specified by user.
| -l |  | Log. By default logging is to stdout. If logfile is specified logging is to file. Under Unix, if ´@´ preceeds 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 SMTP authentication support. Set client to use internal_ip and port as a SMTP server. Address of real SMTP server must be configured as a part of SMTP username. Format for username is username@server, where server is address of SMTP server and username is user´s login on this SMTP server. Login itself may contain ´@´ sign. Only cleartext authentication is supported, because challenge-response authentication (CRAM-MD5, SPA, etc) requires challenge from server before we know which server to connect.

## 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)