Configuring the Scope propertiesThis gallery is also available as a PDF in a TechRepublic Download and as an entry in the TechRepublic Servers and Storage blog.
The default is for a DHCP client to update A (host name) records and have the DHCP server update the PTR records. If you select the Always dynamically Update DNS A and PTR records option, as we have done, the DHCP server updates all A and PTR records. If you select the Discard A and PTR records when lease is deleted check box, when any client lease expires, the DNS entries expire and will be removed. Deselecting the box simply leaves your lookups there.