An Active Directory error occurred when trying to check the suitability of a server
Applies to: Exchange Server 2013
This error indicates that you cannot connect to a domain controller. Several checks are performed to a domain controller before connecting to it. If you are targeting a specific domain controller and the suitability checks fail you may not be able to connect to the domain controller.
To resolve this error, do one or more of the following:
If you are trying to connect to a specific domain controller, allow Active Directory driver to select a domain controller.
Check to make sure you are not having any network connectivity issues.