Fabrikam, Ltd. has an Exchange Server organization that contains two servers. The servers are
configured as shown in the following table.

Recently, the internal and external namespaces named mail.fabrikam.com and
autodiscover.fabrikam.com were changed to point to EX2.
You configure all of the users on EX2 to access their mailbox by using Microsoft Outlook from the
Internet.
You enable Outlook Anywhere on EX1.
You need to ensure that users who have mailboxes on EX1 can connect to their mailbox from the
Internet.
What should you do on EX1?

A.
Set the ExternalHostName value to NULL.

B.
Set the ExternalClientAuthenticationMethod value to Basic and NTLM.

C.
Set the IISAuthenticationMethods value to Basic and NTLM.

D.
Set the InternalHostName value to NULL