I'm having an issue with my new SBS 2008 system, at the moment it is the only server on my very small network of only 5 PC's all sitting behind a CheckPoint Safe@Office
The problem I am having is when I enable Exchange 2007 and particuarly the Transport server, my network effectively stops due to congestion. it would seem that once this service is enabled the server starts forcing loads and loads of DNS queries out to the internet, which my firewall picks up as UDP Port 53. Which itself actually gets hot enough to cook an egg from the work load that SBS is trying to force through it.
Would anyone know whats causing this and how to stop it? the only difference I can find that this set up has to another client of mine is that the working site has a Smart Host that all there mail is relayed to where as this one does not. but surely that can't be it otherwise how are you supposed to operate with paying for a smart host too.
Thanks in advanced!!!