When using Exchange Cluster in the Exchange plugin configuration window only one of the nodes making up the cluster can be selected as the main server and not
the virtual client itself which should be the case.
This was an issue seen with Exchange cluster setups prior to version 4.5.17 of the Exchange plugin.
Remove the virtual client form Client Management
Download the latest version of the Exchange plugin (4.5.17 or above).
Recreate the virtual client with the new plugin.
In the plugin configuration it should now be possible to select the virtual server itself and therefore it should be possible to browse databases on all Exchange nodes within the cluster.
