I am trying to setup the first DAG in my Exchange 2010 environment. I currently have an Exchange 2003 cluster and have built new Windows 2008 R2 enterprise servers for Exchange 2010. I have the first server built with the cas, mb, and ht roles. When I try to configure the DAG I get the error that states "The Exchange Trusted Subsystem is not a member of the local administrators group on the specified witness server"
However, it is a member of the local admins group on the server I'm trying to specify as the witness server.
I have scoured google and the technet and haven't found a solution yet. Anyone else run into this?