You have an Exchange Server 2010 organization that contains multiple Hub Transport servers. You
need to recommend a message hygiene solution to meet the following requirements:
• Block servers that are known to send spam
• Minimize administrative effort
What should you recommend?
A.
an IP Block list
B.
IP Block list providers
C.
recipient filtering
D.
sender filtering
Explanation:
IP Block List Providers are part of the connection filtering feature in Exchange. When the IP Block List
Providers feature is enabled on a computer, the Connection Filter agent queries the specified IP
Block List provider services to determine if the messaging server that has initiated the connection is
a host that is known to send spam.
http://technet.microsoft.com/en-us/library/dd351199.aspx