A、Create and configure a one-way recipient connection agreement from Active Directory to Exchange Server 5.5 B、Create and configure a configuration connection agreement between Exchange Server 5.5 and Active Directory C、Create and configure an inter-organizational recipient connection agreement from Exchange Server 5.5 to Active Directory D、Create and configure a two-way recipient connection agreement between Exchange Server 5.5 to Active Directory E、Use Microsoft Identity Integration Server (MIIS) to synchronize objects between Exchange Server 5.5 and Active Directory