You have an Exchange Server 2010 organization. Users on the network use HTTPS to connect to Outlook Web Access (OWA). The Client Access
Server uses a certificate issued by an internal certification authority (CA).
You plan to deploy an email encryption solution for all users. You need to ensure that users can send and receive encrypted email messages by using S/MIME from OWA.
What should you do?
A. Issue a certificate to each user.
B. Instruct all OWA users to import a root CA certificate.
C. Modify the authentication settings of the OWA virtual directory.
D. Configure the Client Access server to use a certificate issued by a third party CA.
