I'm trying to figure out what this service is doing on my e2k7 server. I have Exchange 2007 SP rollup 3 installed on a 2003 x64 Server. I was looking at the process list and I noticed a service called EdgeTransport.exe taking up a lot of CPU and memory. We use a third party spam filtering service and I don't to my knowledge have the EdgeTransport portion of the server installed. Is this service related to something else or can I kill it? If I can kill it, how did it get started in the first place?