HiI am trying to install Exchange 2007 SP1 Active SCC on a Windows 2008 cluster.The Hub Transport and CAS servers have already been installed on different servers. However, when I try and install the Active Mailbox role, it errors out at the last point of the setup (Clustered Mailbox Server) with the following message:Cluster Common Failure Exception: The cluster resource for clustered mailbox server "MBX1" was not foundAny ideas on what this means????

Does the resources below present in the cluster admin? If yes, please remove them, and then run the installation again MSDTC Network Name, MSDTC IP Address ResourceJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com