You have an Exchange organization. All servers in the organization have Exchange Server 2010 SP1 installed.
You need to prevent a user named User1 from using Outlook Web App (OWA) to access his mailbox.
What should you do?
A. From the properties of User1’s mailbox, modify the mailbox settings.
B. From the properties of User1’s mailbox, modify the mailbox features.
C. Create a new OWA Mailbox Policy
D. Modify the default OWA mailbox policy
