You need to recommend a security solution to meet the following requirements:

You have an Exchange Server 2010 organization. Your company has a relationship with another
company. The partner company has an Exchange Server 2010 organization. You need to recommend
a security solution to meet the following requirements:
• Ensure that all e-mail delivery between your servers and the partner company’s servers is
encrypted

• Ensure that all communication between your servers and the partner company’s servers is
authenticated
What should you include in the solution?

You have an Exchange Server 2010 organization. Your company has a relationship with another
company. The partner company has an Exchange Server 2010 organization. You need to recommend
a security solution to meet the following requirements:
• Ensure that all e-mail delivery between your servers and the partner company’s servers is
encrypted

• Ensure that all communication between your servers and the partner company’s servers is
authenticated
What should you include in the solution?

A.
Active Directory Rights Management Services (AD RMS)

B.
Domain Security

C.
Forms-based Authentication

D.
Secure/Multipurpose Internet Mail Extensions (S/MIME)

Explanation:
Domain Security refers to the set of functionality in Microsoft Exchange Server 2010 and Microsoft
Office Outlook 2007 that provides a relatively low-cost alternative to S/MIME or other message-level
security solutions. The purpose of the Domain Security feature set is to provide administrators a way
to manage secured message paths over the Internet with business partners. After these secured
message paths are configured, messages that have successfully traveled over the secured path from
an authenticated sender are displayed to users as Domain Secured in the Outlook and Microsoft
Office Outlook Web App interface. Domain Security uses mutual Transport Layer Security (TLS)
authentication to provide session-based authentication and encryption. Mutual TLS authentication
differs from TLS as it’s usually implemented. Typically, when TLS is implemented, the client verifies
that the connection securely connects to the intended server by validating the server’s certificate.
This is received as part of TLS negotiation. In this scenario, the client authenticates the server before
the client transmits data. However, the server doesn’t authenticate the session with the client. With
mutual TLS authentication, each server verifies the connection with the other server by validating a
certificate that’s provided by that other server. In this scenario, where messages are received from
external domains over verified connections in an Exchange 2010 environment, Outlook 2007 displays
a Domain Secured icon.
http://technet.microsoft.comen-us/library/bb124392.aspx



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