Those attributes cannot be removed but can be reset to a blank value using Policy Xpress (PX). Here is the story:
1. Create a PX that is triggered in a certain condition. In this techdoc, disabling a corporate user will fire the PX to re-set their account's payload
Select an appropriate event to trigger the PX, for example:
Create relevant data elements to use in Action Rules, for example:
Set appropriate conditions to invoke action rules, for example, userID contains "test" string and has disable status (=1).
Add an Action Rule to reset the payload with blank values:
On 14.x the format has changed, you should use the following format instead:
Put the above data in the Value field of the payload:
Save the PX.
2. Run a task to trigger the condition for the PX to fire. Verify that the attributes msExchPoliciesExcluded, msExchRemoteRecipientType, and msExchUsageLocation are set to <not set> in AD.