I have the a WinNT4 server installed with IIS4.0 running WWW, FTP and SMTP services.
They are all needed, which means turning it off is not an option.
The server is co-located at an ISPs data centre.
My question is related to the SMTP services.
I have already set the option not to relay mail, in the IIS Manager.
However, I can see that there are hundreds of mails being pumped out by my server from the queue.
I am running the latest version of TrendMicro OSCE 6.5 with patterns updated. No viruses/worms found.
I suspect the server is being used as a mail and spam relay.
How can I confirm this, and how can I stop it?