I'm preparing a new 2 nodes exchange cluster. When i try to install exchange on one of the nodes it gives the error message " Failed to lookup the Windows Site to which this computer belongs. Please verfy that your computer and DmainController use the same dns server; that your computer is configured with the correct site information and is in Windows domain where the Domain Controller is reachable". I don't have any problems in running DCdiag or NEtdiag. I have only one default site. We have 3 domain controllers one of which is acting as exchange server. Plzzzzzzzzzzzz Help

Can you check your cluster setup prior to installing excange on the cluster? Microsoft Cluster Configuration Validation Wizard (ClusPrep) http://www.microsoft.com/downloads/details.aspx?FamilyID=bf9eb3a7-fb91-4691-9c16-553604265c31&displaylang=en Deli