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？（）

You have an Exchange Server 2010 organization. 
All users connect to their mailboxes by using Microsoft Office Outlook 2007 Service Pack 2 （SP2） andWindows 7. 
Your companys security administrators deploy Outlook Protection Rules. 
You need to recommend a client connection solution for the organization to ensure that Outlook ProtectionRules can be used. 
What should you recommend？（）

You have an Exchange Server 2010 organization. 
Your companys compliance policy states that the following occurs when a user leaves the company：.The user account is disabled
.The user account and mailbox are deleted after six months .All e-mail messages in the mailbox are retained for three years 
You need to recommend a solution to retain the e-mail messages of users who leave the company.The solution must meet the following requirements：
.Ensure that a group named Group1 can manage the process .Minimize disk space required to store the mailbox databases
What should you recommend？（）

Your company has a Windows Server 2003 Active Directory forest that contains a single domain. The functional level of the forest is set to Windows 2000 native. 
You have an Exchange organization that contains Exchange Server 2003 Service Pack 2 （SP2） andExchange Server 2007 Service Pack 2 （SP2） servers. 
You plan to transition the organization to Exchange Server 2010. 
You need to prepare Active Directory for the installation of the first Exchange Server 2010 server. 
What should you do？（）