12.4 Daemon Mode

To start mtasim in daemon mode, use the --daemon (or -bd) command line option. This mode is not quite the same as Sendmail -bd mode. When started in daemon mode, mtasim selects the first available TCP port to use from the range ‘1024 -- 65535’. It prints the selected port number on the standard output and starts listening on it. When a connection comes, it serves a single SMTP session and exits immediately when it is ended.

This mode is designed for use in shell scripts and automated test cases.