Question : Mysterious SMTP Sessions

I am, and have been for some time, getting lots of mysterious session in my Exchange 2000 System Manager "Current Sessions."  I have been running this system for years and their is no indication that it is being used as a relay, but i would really like an explanation for this.  All it appears able to do is to send the emails to accounts on my LAN, which is pretty harmless.

Any help would be much appreciated.

Answer : Mysterious SMTP Sessions

For 3D games, the video card usually makes the most impact - the 3870 is a little old, so try an HD5xxx series, like an HD5830, or if that is too expensive, an HD5750.  Your cpu is also fairly low, though it should still be usable - check the task manager to see if it is at 100% when playing, if possible.  There's no point trying to upgrade that unless you are willing to replace cpu, motherboard, and RAM, since I would recommend an i7 or i5 to replace it, and those require difference motherboards and RAM.