单项选择题
A.You must set up an IP Block list.
B.You must set up sender filtering.
C.You must set up managed folders.
D.You must build a transport rule
单项选择题 You have an Exchange Server 2010 organization that contains 20 Mailbox servers.You plan to create 10 mailbox databases on each Mailbox server. You need to create a naming convention for all mailbox databases. What should you include in your naming convention（）？
单项选择题 YouworkastheenterpriseexchangeadministratoratXxx.XxxisusingMicrosoftExchangeServer2003astheirmessagingsolution.YouhaveaddedanewservertothenetworkanddeployedExchangeServer2010onitwiththedefaultsettings.Whatcommandmustbeusedtochangethedefaulte-mailaddresspolicy？（）
多项选择题 YouworkastheenterpriseexchangeadministratoratXxx.TheXxxnetworkisrunninginaMicrosoftExchangeServer2010environment.ASMTPserverontheInternethasrejectedsomeemailsentfromXxx.Whatactionsmustyoutaketodeterminewhythishappened？（）