Your company has an Exchange Server 2010 Service Pack 1 (SP1) Hub Transport server
named Hub1.
Hub1 receives all of the e-mail sent to the company from the Internet.
You install anti-spam agents on Hub1.

You need to ensure that Hub1 only accepts messages sent to e-mail addresses listed in
Active Directory.
What should you modify?

A.
the anti-spam settings of the organization

B.
the properties of Hub1s default Receive connector

C.
the e-mail address policy of the organization

D.
the anti-spam settings of Hub1