The Exchange ActiveSync protocol, based on HTTP and XML, lets mobile devices such as browser-enabled cellular telephones or Microsoft Windows Mobile® powered devices access an organization's information on a server that is running Microsoft Exchange. Exchange ActiveSync enables mobile users to access their e-mail, calendar, contacts, and tasks and to continue to be able to access this information while they are working offline.

Note:
Exchange ActiveSync can synchronize e-mail messages, calendar items, contacts, and tasks. You cannot use Exchange ActiveSync to synchronize notes that are in Microsoft Outlook.

By default, after you install the Client Access server role on the Exchange 2007 server, Exchange ActiveSync is enabled. Users need only configure their mobile devices to synchronize with the Exchange Server computer to use Exchange ActiveSync. There are a variety of management tasks that you can perform by using Exchange ActiveSync. These include configuring Exchange ActiveSync mailbox policies and configuring authentication for increased security. You can perform some of these tasks in the Exchange Management Console and all of them in the Exchange Management Shell.

Administrative permissions are required to manage the Exchange 2007 server that has the Client Access server role installed. For more information about the permissions that are required to perform administrative tasks for Exchange ActiveSync, see Required Permissions to Manage Client Access.

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