TTL Question

Chris Buxton cbuxton at
Tue Oct 16 16:38:12 UTC 2007

This sounds more like a stale delegation problem than a caching problem.

When you retired the server, did you notify your zones' parents? For  
example, if the server hosted the zone, did you notify  
the registrar for .ca?

Chris Buxton
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On Oct 16, 2007, at 8:21 AM, Mike Diggins wrote:

> What dictates how long another name server caches the authoritative  
> name
> server for a domain? I was under the impression it was the default
> time-to-live, but I have a situation where an authoritative name  
> server
> was removed from service several days ago, yet queries to it  
> continue. Dig
> is correctly reporting the new authoritative name servers for the  
> domain
> in question. How common is it for DNS servers to ignore the ttl?
> -Mike

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