A corporate environment includes Exchange Server 2003 SP2. Client computers run Microsoft Office
Outlook 2003. You deploy Exchange Server 2010 in the existing Exchange organization, and then
install Exchange Server 2010 SP1 on all the Exchange Server 2010 servers. The company intends to
move mailboxes from Exchange Server 2003 SP2 to Exchange Server 2010 SP1. You need to
recommend a solution for ensuring that after their mailboxes are moved, users can open their
mailboxes by using Outlook 2003. What should you recommend?

A.
Obtain and install an SSL certificate for each Exchange Server 2010 SP1 Client Access server.

B.
Configure Outlook 2003 to encrypt data between Outlook and the Exchange server.

C.
Obtain and install an SSL certificate for each Exchange Server 2010 SP1 Mailbox server.

D.
Configure Outlook 2003 to use NTLM authentication.

Explanation:
Now that we know about the new RPC Client Service running on the 2010 CAS Server, lets bring up
the full info by running Get-RpcClientAccess | fI