You have an Exchange organization named nwtraders.com. All servers in the organization have Exchange Server 2010 SP1 installed.

Your company acquires another company named Contoso, Ltd. You plan to create new mailboxes for each user from Contoso.

You need to ensure that each new mailbox can receive email messages sent to contoso.com.

Which two objects should you create? (Choose two).

A.
A Receive connector.

B.
A Remote domain.

C.
An organizational relationship.

D.
An accepted domain.

E.
An email address policy.

Explanation:
An accepted domain is any SMTP namespace for which a Microsoft Exchange organization sends or receives email. Accepted domains include those domains for which the Exchange organization is authoritative. An Exchange organization is authoritative when it handles mail delivery for recipients in the accepted domain. Accepted domains also include domains for which the Exchange organization receives mail and then relays it to an email server that’s outside the Active Directory forest for delivery to the recipient.

You must configure an accepted domain before that SMTP address space can be used in an email address policy. When you create an accepted domain, you can use a wildcard character (*) in the address space to indicate that all subdomains of the SMTP address space are also accepted by the Exchange organization. For example, to configure contoso.com and all its subdomains as accepted domains, enter *.contoso.com as the SMTP address space. The accepted domain entries are automatically available for use in an email address policy.

If you delete an accepted domain that’s used in an email address policy, the policy is no longer valid, and recipients with email addresses in that SMTP domain will be unable to send or receive email.

Reference:

http://technet.microsoft.com/en-us/library/bb124423