Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool queries the Win32_Service Windows® Management Instrumentation (WMI) class to determine the value of the Started key for the Dynamic Host Configuration Protocol (DHCP) Client service. If the Exchange Server Analyzer finds that the value of the Started key for the DHCP Client service on an Exchange server is set to False, the Exchange Server Analyzer displays a warning.

This warning indicates that the DHCP Client service is not running. The DHCP Client service performs dynamic Domain Name System (DNS) updates. If the DHCP Client service is not running, dynamic update failures will occur. If an Exchange server is not running this service, the most common problem will be mail flow problems.

To correct this problem, set the DHCP Client Service to automatic startup, and then start the service.

Note:
The DHCP Client service must be running, even if the server is configured to use static IP addresses rather than DHCP.
To enable the DHCP Client service

  1. Open the Services snap-in.

  2. In the details pane, right-click the DHCP Client Service, and then click Properties.

  3. On the General tab, click the Startup type, and select Automatic.

  4. Click Start, and then click OK.

For more information about the DHCP Client service, see Microsoft Knowledge Base article 264539, "Dynamic DNS updates do not work if the DHCP client service stops" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=264539).

For more information about the DNS dynamic update protocol, see Microsoft Knowledge Base article 816592, "How to configure DNS dynamic updates in Windows Server 2003" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=816592).