... information: For Exchange 2000 Server, Exchange 2000 Server Service Pack 1 (SP1), or Exchange 2000 Server Service Pack 2 (SP2), set this value to 9000. For Exchange 2000 Server Service Pack ... running Exchange 2000 Server. Exchange Server 2003 will ignore this value if present, and the value will have no effect. Therefore, you should remove this registry entry before upgrading this Exchange ... you should remove this registry entry before upgrading this Exchange Server from Exchange 2000 Server to Exchange Server 2003. Before You Begin Before you perform the procedure in this topic,...