I'm setting up my smtp server for dnn and I have an internal exchange server that I was previously not able to connect to.  I set up relaying on the exchange server but the event log showed that a software on my host machine was blocking the request.  I started poking around in the host machine's anti-virus software and found a setting that listed what processes were allowed to send/receive mail through port 25.  I turned this rule off and my email was successfully sent.  I want to leave this rule active but am not sure what process I need to define for dnn?  Or, is it an IIS process I need to define?  Some of the processes already defined are tomcat.exe,outlook.exe,adora.exe, etc.  I just need to know what process to add to this group to allow dnn to use the port.  Any help appreciated.

Paul