YouhaveanExchangeServer2010organizationnamedContoso.comthatcontainsamail-enabledDomainLocalgroupnamedGroup1.Usersfromoutsidetheorganizationreportthatalle-mailmessagessenttogroup1@contoso.comgenerateanon-delivery-report(NDR).Youneedtoensurethatusersfromoutsidetheorganizationsende-mailtogroup1@contoso.com.Whatshouldyoumodifyforgroup1?()
A.Advancedsettings
B.Groupscope
C.Grouptype
D.Themailflowsettings