- Go to Devices.
- Select a Messaging Security Agent.
- 
                Click Configure Policy.
                 
                    A new screen appears. 
- 
                Click Mobile Security > Device Access Control.
                 
                    A new screen appears. 
- Select Enable Device Access Control.
- Click Add.
- Type a policy name and a meaningful description for the policy.
- 
                Select which devices to allow/block access to the Microsoft Exchange Server by
                    identifying the device owner(s):
                - 
                        Anyone 
- 
                        Specify device owners 
 
- 
                        
- 
                If Specify device owners is selected:
                - Type a device owner's name and click Search to find the device owner in the Microsoft Exchange Server's Global Address List.
- Select the device owner and click Add.
 
- If it is known, select the device's operating system from the Type drop-down list.
- If it is known, select Specify version number range and identify which versions of that operating system are allowed.
- Specify whether the Messaging Security Agent should allow or block access to the device owner's mail, calendar, contacts, or tasks.
- Click Save.
Parent topic: Mobile Security
 
		