When the Microsoft Mail Connector is installed, Microsoft Exchange Server creates an AdminSch account in the Recipients container for the Schedule+ Free/Busy Connector. To use the Schedule+ Free/Busy Connector, you must configure the AdminSch account by specifying an administrator's mailbox. This mailbox delivers status messages including non-delivery reports (NDRs). You can also specify settings, such as logging levels and polling intervals, which determine how often the Schedule+ Free/Busy Connector sends free and busy information to the MS Mail (PC) system.
Every postoffice that shares free and busy information must have an AdminSch account. You should run directory synchronization between Microsoft Exchange Server and the MS Mail (PC) system to distribute all AdminSch accounts across both systems.