SMTP_LISTENER_PORT

This configuration variable defines the port number to which the SMTPL.EXE listener will bind at boot time.

Under normal circumstances it is not advisable to set this parameter. It is only for use when it becomes necessary to force SMTPL.EXE to listen out on a non-standard port (i.e., other than the standard SMTP port, port 25). This parameter would normally be set only if another SMTP mail application were running on the same machine as LISTSERV and it were necessary to avoid an SMTP port conflict. However, please note that this implies that the other SMTP mailer is able to forward mail from LISTSERV to the non-standard port you define.

This variable is normally not set. The default value would be 25.