Permissions to monitor exchange 2010

We're running OpManager 9200 and would like to being monitoring Exchange 2010.  The service account we use for OpManager/WMI is a member of the domain admins group but some items we want to monitor are showing up as N/A.  Are there exchange permissions we need correctly monitor the server(s)?

		Active Mailbox Delivery Queue Length	N/A
		Active Remote Delivery Queue Length	N/A
		Messages Queued For Delivery Per Sec	N/A
		Messages Received Per Second	N/A
		Messages Sent Per Second	N/A
		Messages Submitted Per Second	N/A
		Retry Mailbox Delivery Queue Length	N/A
		Retry Remote Delivery Queue Length	N/A

• Topic Participants

• gabrielme

• Sasha Odarchuk