We have a new exchange installation we are trying to get setup. It is a single server running CSA, Hub Transport, MBX, etc. It is exchnage 2007 on windows 2008 64 bit. Email is not being delivered locally or externally and I can not find any messages using the queue viewing tool. Event log has error 1009 "The Microsoft Exchange Mail Submission Service is Currently Unable to Contact Any Hub Transport Servers in the Local Active Directory Site...." I beleive this event is the reason we are experiencing the issue. Note that I have done some research on this error, most conditions seem to point to lack of resources on the hub transport server, such as disk space. This is not the case in our instance. Any help appreciated. I can provide further information if needed.