By default, the Load Zone Data On Startup drop-down list box is set to the From Active Directory And Registry option. Thus, by default, DNS servers in Windows Server 2003 initialize with the settings specified in the Active Directory database and the server Registry.
However, this setting includes two other options, From Registry and From File, as shown in Figure 5-30.
When you select the From Registry option for the Load Zone Data On Startup setting, the DNS server is initialized by reading parameters stored in the Windows Registry. When you select the From File option, the DNS server is initialized by reading parameters stored in a boot file, such as those used by BIND servers.
To use such a file, you should supply a copy of a boot file from a BIND-based DNS server. On BIND-based DNS servers, this file is typically called the Named.boot file. The format of this file must be the older BIND 4 format, not the more recent BIND 8 boot file format. When a boot file is used, settings in the file are applied to the server, overriding the settings stored in the Registry on the DNS server. However, for any parameters not configurable using boot file directives, Registry defaults (or stored reconfigured server settings) are applied by the DNS Server service.
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