Throttling Policies error - EV9.0.1

I found this on another site, may be something you want to talk to microsoft about?

Notes From The Field: Consider Active Directory Replication Delays in Exchange 2010 Troubleshooting

Markus Bellmann

Senior Solution Architect, Siemens AG, Germany

With one customer, we ran into the issue that newly created databases did not mount immediately. The error was "Active Directory operation failed on <servername>. This error is not retriable. Additional information: The name reference is invalid". The reason for that behavior is that Remote PowerShell connects to a Client Access server, not to a Mailbox server. The good news is that Exchange will try to mount the database repeatedly, so when the information is replicated to the configuration domain controller responsible for the Mailbox server, the database will be automatically made available.

The bottom line is that when creating mailbox databases using Remote PowerShell, you may want to make sure that the Mailbox server and the corresponding Client Access servers use the same domain controller for configuration. You can verify this with the Get-ADServerSettings |fl cmdlet, and configure the domain controller that is used by PowerShell with the Set-ADServerSettings cmdlet.

Create a new throtling policy in exchange 2010 and set it as unrestricted

once you are done with it use the same policy to apply to vault service account, it worked in my case.

But I use the script SetEVThrottlingPolicy, How can I create one?

You would like to forward this to your exchange admin's in my case i am handling both exchange and EV so it was easy stuff for me, but you might need to explain them a bit why this needs to be done this can be of bit help to you.
http://www.exchangedictionary.com/index.php/Latest/how-to-configure-client-throttling-in-exchange-2010.html

Cheers!!!