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| Clear up recursion confusion in a Windows 2000 server |
| If you've worked with the DNS server in Windows 2000 and have become familiar with the DNS |
| console, you might have noticed two confusing settings: Do Not Use Recursion and Disable |
| Recursion. At first, it appears that Microsoft created two settings, in different places, that do the |
| same thing. But, of course, they don't. |
| To find the Do Not Use Recursion setting, open the DNS console and select the server. From the |
| Action menu, select Properties and select the Forwarders tab. If you've enabled forwarding, you can |
| change the setting for Do Not Use Recursion. By default, when the DNS server uses forwarders and |
| they fail, the server tries to resolve the query using normal recursion. By enabling this setting, the |
| DNS server won't perform recursion after forwarders fail. |
| Disable Recursion, located on the Advanced tab, defines how the DNS server will act upon client |
| requests. By default, recursion is enabled; the server takes care of the whole request and queries |
| other servers on behalf of the client until it completely resolves the query. If you enable this |
| setting, and in effect disable recursion, the server only refers the client to another DNS server(s) |
| that might be more likely to help resolve the queried name. By disabling recursion, you also |
| disable forwarding, although Microsoft fails to mention this. |
| As you can see, even though these recursion settings are related, they don't do the same thing. |
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