Your company has an Exchange Server 2010 Hub Transport server named Hub1. Hub1 receives all of the email sent to the company from the Internet.

You install antispam agents on Hub1. You need to ensure that Hub1 only accepts messages sent to email addresses listed in Active Directory.

What should you modify?

A.
The antispam settings of Hub1.

B.
The antispam settings of the organization.

C.
The email address policy of the organization.

D.
The properties of Hub1’s default Receive connector.