I'm running a 2003 AD domain w/ 2003 Exchange running on it's own server (HP DL380G5). I've got a 3mb T1 pipe from the outside, but computers (both servers & workstations) internal on the network are getting really slow (200 ~ 400 kbps) Internet connections. I've looked at my SonicWall 4060 firewall and according to the logs nothing is really hogging bandwidth. Also, I've noticed that when I shut down the Exchange server, bandwidth goes back up to over 2000 kbps. As soon as the Exchange server comes back up, bandwidth goes back down. The Exchange box is running on Win2k3 SP2 and the Exchange is also on SP2. I've updated the firmare of the exchange box as well as for the NICs. Still same problem. What could be the issue?