My question is regarding SMTP. I have a Notes server (version 6.5.4 on Windows 2000) residing in a DMZ. This server has been up and running for some time. I am trying to start the SMTP task, but I keep getting this error:
04/11/2006 09:04:34 AM SMTP Server: Another application is already listening on port 25:
04/11/2006 09:04:32 AM SMTP Server: Starting...
04/11/2006 09:04:33 AM Administration Process started
04/11/2006 09:04:33 AM LDAP Server: Starting...
04/11/2006 09:04:33 AM AMgr: Executive '1' started
04/11/2006 09:04:33 AM DIIOP Server: Starting...
04/11/2006 09:04:33 AM Database Server started
04/11/2006 09:04:34 AM SMTP Server: Another application is already listening on port 25:
Any idea on what is running on port 25 or how to find and resolve the problem?
QUESTION POSED ON: 14 APR 2006
QUESTION ANSWERED BY: Mathew Newman
Typically this error occurs due to Windows starting the Microsoft SMTP service at startup or installing and activating some other third-party SMTP product before Domino can start its SMTP listener task.
If you haven't installed another application on the server, it is most likely the Microsoft SMTP service that is causing the problem.
Installing or configuring Microsoft's Internet Information Server (IIS) is normally the reason that this error occurs in Domino, as the (Windows) SMTP service is part of the IIS installation in Windows 2000 (which is a default install option on Windows 2000 -- you have to deselect this during the software install if you don't want IIS running on the machine). If you haven't tried running the Domino SMTP task previously, then you may not have realized that Windows was already running its own SMTP service.
Check your MMC using the services snap-in to see whether the "Simple Mail Transport Protocol (SMTP)" Windows service has started. If it has, stop the service, and change its start-up settings to "Disable."
Once this has been done, reload your Domino SMTP task by typing "Load SMTP" at the server console or by using the Domino administrator client to start the task.
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