Couldn't perform the operation because the server isn't a Mailbox server
Applies to: Exchange Server 2013
This error indicates that you are trying to complete an action that you can only complete on the Mailbox server. For example, you are trying to add a mailbox database on the Client Access server.
To resolve this error, do one or more of the following:
- Make sure that you’re specifying a Mailbox server for the task you are trying to accomplish, either in the EAC or while using the Management Shell.