You have an Exchange organization. All servers in the organization have Exchange Server
2010 Service Pack 1 (SP1) installed. All servers run Windows Server 2008 R2.
The organization contains Mailbox servers, Client Access servers, and Hub Transport
servers only.
You need to identify why a server on the Internet rejects e-mail messages sent from users in
the organization.
What should you do?

A.
Run the Set-AdminAuditLogConfig cmdlet.

B.
Run the Set-EventLogLevel cmdlet.

C.
Run the Get-MailboxFolderStatistics cmdlet.

D.
Enable SMTP protocol logging.

E.
Modify the Server Diagnostic Logging Properties.

F.
Run the Exchange Best Practices Analyzer.

G.
Run the Exchange Server User Monitor (ExMon).

H.
Review the connectivity logs.

I.
Modify the Log Settings from the properties of the Hub Transport server.

J.
Run the Get-MailboxStatistics cmdlet.
K.
Review the Application event log.
L.
Run the Get-User cmdlet.

Explanation:
http://technet.microsoft.com/en-us/library/bb124531.aspx