Understanding Exchange ActiveSync Autodiscover
Microsoft Exchange Server 2007 will reach end of support on April 11, 2017. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
Applies to: Exchange Server 2007, Exchange Server 2007 SP1, Exchange Server 2007 SP2, Exchange Server 2007 SP3
Topic Last Modified: 2008-11-13
Microsoft Exchange Server 2007 introduces a new service that makes it easier to provision devices for end users. The Autodiscover service simplifies the provisioning of your mobile device by returning the required system settings after you enter your e-mail address and password. By default, the Autodiscover service is enabled in Exchange 2007.
If your mobile device supports Autodiscover, you can configure your device to synchronize with Exchange 2007. Figure 1 illustrates this synchronization process.
Figure 1 Using Autodiscover with Exchange ActiveSync
The user enters their e-mail address and password on the device.
The device connects to a root DNS server to retrieve the URL for the Autodiscover service and the IP address for the user's domain.
The device uses a Secure Sockets Layer (SSL) connection to connect through the firewall to the Autodiscover service virtual directory. The Autodiscover service assembles the XML response based on the server synchronization settings.
The Autodiscover service sends the XML response through the firewall over SSL. This XML response is interpreted by the device and synchronization settings are configured automatically on the device.
Note: The ability to use Autodiscover depends on the operating system of the mobile device that you are using. Not all mobile device operating systems that support synchronization with Exchange Server 2007 support Autodiscover. For more information about operating systems that support Autodiscover, contact the manufacturer of your device. Note: Autodiscover is supported by Windows Mobile 6.1 and later versions.