1.       Update DNP components to version 2.3.0 using Configuration Studio.

2.       Open all Virtual Servers with Exchange 2007 service. Add “Hosted Organizations” service. Please use physical DNP server with Exchange 2007 service to add "Hosted Organizations" service.  "Hosted Organizations" service is already added to this DNP server by upgrade procedure.

Note that later for existing  or new Hosting Plans, “Hosted Organization” service can be used from another DNP servers too (as well as OS service), but for smooth upgrade – the better way to add it from DNP server the same as “Exchange 2007” added from

3.       Open all Hosting Plans with Exchange 2007 service. We assume those Hosting Plans connected to Virtual Servers edited in previous step. Check that "Hosted Organizations" box checked and related settings successfully migrated from “Exchange 2007” part to "Hosted Organizations" one in Hosting Plan.

4.       Check all important operations in test Organization.

Note that previously needed Microsoft.Exchange.*.dll files coping was needed only for DNP versions prior 2.3.0. DNP 2.3.0 uses native Exchange paths. So no need for this copy operation in this and future upgrades