You are a messaging professional. Your company runs an Exchange Server messaging system that includes Microsoft Exchange Server 2003 computers and Microsoft Exchange Server 2007 computers.

The company has installed one Exchange Server 2007 computer. The computer has the Client Access Server role and the Mailbox server role.

The company has deployed one Exchange Server 2003 back-end server. Mailboxes are located on both the Exchange Server 2007 computer and the Exchange Server 2003 computer.

The Exchange Server 2007 computer name is Exch2.adatum.com. The Exchange Server 2003 computer name is Exch1.adatum.com.

All users are instructed to access Microsoft Outlook Web Access (OWA) by using https://Exch2.adatum.com/exchange.

Some OWA users report that they are required to enter their credentials twice to access their mailboxes.

You need to ensure that users only need to enter their credentials once when accessing OWA.

Which two actions should you perform to ensure that users only need to enter their credentials once when accessing OWA? (Each correct answer presents part of the solution. Choose two.)

A.
Instruct all users to use https: //Exch2.adatum.com/owa.

B.
Instruct users who have mailboxes on Exch1 to use https: //Exch1.adatum.com/exchange. Instruct users who
have mailboxes on Exch2 to use https: //Exch2.adatum.com/owa.

C.
Disable forms-based authentication for the Exchange Virtual Server on the Exchange 2007 server.

D.
Enable forms-based authentication for the Exchange Virtual Server on the Exchange Server 2003 computer.

E.
Deploy a new Exchange 2007 Mailbox server. Move all mailboxes from Exch2 to the new server. Remove
the Mailbox server role from Exch2.