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ssh mailer (sendmail)

Abstract

The document describe new sendmail's ssh mailer. It allows local sendmail to use remote unix accountwith ssh access for email relauing.

Usage

ssh mailer allows sendmail to use "sendmail -bs" (SMTP over sendmail's STDIN & STDOUT) started using ssh on another host.

It can be used as outgoing relay (smart host) for dialup/dynamic connections. It can be also used for privacy protection (hidding details about sending hosts in Reveived: headers).

smarttable development and maintanance has been moved to open-sendmail at sourceforge.net.

Install

In sendmail distribution append ssh.m4 to cf/mailer/ directory.

In *.mc file add

define(`SSH_MAILER_USER',`user:group')dnl
define(`SSH_MAILER_DIR',`_working_dir_')dnl
MAILER(`ssh')dnl

Modify user:group and _working_directory_ to fir your system requirements.

Modify ~user/ssh/.config to allow use executing "sendmail -bs" on the remote host using key authentication. See "man ssh_config" for details.

Additional

The ssh mailer can be used in smart table. It also works well with smart table and sendmail 8.10+ dialup used together.
Feel free to contact me via e-mail to get missing documentation details.

Last Update: 2008-09-18