You work as the Enterprise Exchange Administrator at ABC.com. The ABC.com network consists of a domain named ABC.com. ABC.com is using Microsoft Exchange Server 2010 as their messaging solution.

You have to have the Application Identifier of ABC.com stored in a DNS record. The Application Identifier is used for the federated trust.

What actions must you take on the DNS?

A.
You must set up recipient filtering.

B.
You must set up a Host (A) record.

C.
You must use a TXT record.

D.
You must use a Pointer (PTR) record.

E.
You must use a Mail exchange (MX) record.