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YouhaveanExchangeServer2010organization.YoudeployanEdgeTransportserver.Youneedtoimplementamessagehygienesolutionthatmeetsthefollowingrequirements:.Usersmustbeabletoreceivee-mailfromexternalrecipientswhohavebeenaddedtotheirSafeSendersLists.TheEdgeTransportservermustblockalle-mailsenttoinvalidaddressesinsidetheorganizationWhatshouldyoudofirst?()
A.Enablesenderfiltering.
B.CreateSendconnectors.
C.Configurereal-timeblocklists(RBLs).
D.ConfigureEdgeSyncsynchronization.