Hi Experts. I have a MS Exchange Server 2003 on Server 2003nthat is pulling about 500MB an hour from the internet even when there is no mail coming in. If I reboot the server the problem goes away for about 3 to 4 hours then starts again. I have virus scanned (Symantec and Eset) and scanned with malwarebytes but nothing shows up. I've used Wireshark to try and see packet details but theres nothing unusual. Anyone got any ideas?