Routes to the network subnet being used on WinSD1 are down. It is not properly accessible from most of the locations. We are looking into it and will post an update soon.
You may get setup done accordingly "http://www.microsoft.com/windows/ie/community/columns/mailserver.mspx". If you do not get reply with in a limited time please come over the live chat. Please do let us know if you still have any query.