A.ConfigureandpublishacertificatetemplatethatissuitableforS/MIME,DeployaGroupPolicyobject(GPO)sothatacertificatethatisbasedonthistemplateisautomaticallyissuedtoalldomainusers
B.SpecifyGroupPolicyobjects(GPOs)andIPSecpoliciesthatrequireallclientcomputerstouseKerberosauthenticationtoconnecttomailservers
C.Foreachmailserver,acquireanSSLservercertificatefromacommercialCAwhoserootcertificateisalreadytrusted
D.RequireIPSecencryptiononallTCPconnectionsthatareusedtosendorreceivee-mailmessages