YouhaveanExchangeServer2010organization.AnEdgeTransportserversendsandreceivesalle-mailmessagesfromtheInternet.YounoticethatsomeserversontheInternetidentifye-mailmessagesfromyourorganizationasspam.Youneedtominimizethepossibilitythate-mailmessagessentfromyourorganizationareidentifiedas spam.Whatshouldyoudo？（）
A.ImplementMicrosoftForefrontSecurityforExchangeServer.
B.CreateSenderIDTXTrecordsfortheEdgeTransportservers.
C.ConfiguretheEdgeTransportserverstouseareal-timeblocklist（RBL）.
D.Installaservercertificatefromatrustedthird-partycertificationauthority（CA）.
参考答案：B
