On Tue, 2002-08-06 at 18:47, David Wright wrote: > > My question is, can we avoid this problem in the future by having our > own DNS server be an NS authority (or at least one of them), instead > of relying on the ns*.mydomain.com servers? yes, I do this same thing for my domain. > > Obviously this would protect us against the ns*.mydomain.com servers going > down, but doesn't a lookup still require querying namesdirect.com (our > registrar) to find out who the NS authorities are? If yes, then aren't we > still relying on the availability of our registrar's systems? If no, > then just how does a DNS server find out who the NS authority for a domain > is? No, if your internal systems are set to use your internal nameservers, and your nameservers are authoritative for your domain, the buck stops there. In fact you can (and I do) point the names to different addresses internally than the Internet NS's do. The only time your internal NS will forward a request to the Internet is when it is queried for a domain for which it is not authoritative. (oh, and mydomain.com will still handle your DNS for the rest of the world) -Mark
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