I have a SBS 2008 server which , when connected to the network drops the internet speed from 5Mb to 0.5Mb on all clients.
The server is fully service packed, does not have forefront on it (Has the following):
ESET for Exchange server
Blackberry Enterprise Server Express
Exclaimer Mail Utilities
I have checked DNS Forwarders and tried several, updated the NIC driver, ran the "Fix my Network" wizard, restarted the server and am now pulling what little of my hair I have left out!
I have monitored network traffic also, and it is not excessive, updates are set to download at 22:00 and there seems to be nothing else for me to look into (Hence the 500 points)
All help gratefully accepted!