Microsoft Exchange Server 2003 Deployment Guide- P53:Your Exchange Server 2003 deployment plan should reflect your understanding of how Exchange and Microsoft Windows Server™ operating systems interoperate. It should encompass the relationships between Windows Server 2003 and Microsoft Windows® 2000 Server sites and domains, domain controllers, global catalog servers, and Exchange 2003 administrative and routing groups. | 521 3. On the Mobile Services Properties page under Exchange ActiveSync select from the following check boxes Select Enable user initiated synchronization to allow users to use Pocket PC 2002 devices to synchronize their Exchange data. Select Enable up-to-date notifications to enable users to receive notifications that are sent from the Exchange server to devices that allow notifications. Select Enable notifications to user specified SMTP addresses to enable users to use their own SMTP carrier for notifications. _1 Note With this feature enabled when a new message arrives in a user s mailbox up-to-date notifications allow synchronization to occur on a user s device. Enable this feature if you have users who are using mobile devices to synchronize and you do not want to specify the carrier. 522 4. Click Apply and then click OK. For More Information For detailed steps for enabling ActiveSync features at the user level see How to Enable and Disable Exchange ActiveSync Features at the User Level. For detailed steps for how to configure a mobile device to use Exchange ActiveSync see How to Configure a Mobile Device to Use Exchange ActiveSync. How to Enable and Disable Exchange ActiveSync Features at the User Level The following procedures describe how to enable or disable the Exchange ActiveSync application for a specific user or group of users in your organization. Before You Begin You can perform these tasks using Active Directory User and Computers with or without the Exchange Task Wizard. The advantage to performing it 523 with the Exchange Task Wizard is that you can modify the settings for multiple objects at one time. Procedure To enable and disable Exchange ActiveSync features at the user level 1. On the Exchange server with the user s mailbox log on with the Exchange administrator account and then start Active Directory Users and Computers. 2. Expand the domain and then open the location for the users that you want to manage. 3. Right-click the user or users .