Negative Cache won't go!

Duncan Berriman duncan at dcl.co.uk
Mon Jul 5 07:21:21 UTC 2010


Not unusual in my experience.

Probably find the dns is badly configured - at a guess different ns 
records at root servers or missing/badly configured ns records.

Check the dns of the domain out with dnsstuff.com and fix any errors. 
Probably find it works then.

Duncan

Alans wrote:
> Hi everyone,
>
> There is a website that was returning servfail but works fine with +trace.
> AFAIK, negative cache default value is 3 hrs, and I haven't set
> max-ncache-ttl, also domain owner says he used default TTL in his zone
> files.
> I waited for 1 day and the website didn't work till I restarted named.
> Also I used rndc flushname domainname.com (with and without www.).
>
> Is there any other way to solve this issue without restarting named? And any
> clue why named isn't purging it?
> I'm using Bind v9.4.2 on Centos 5.2.
>
> Regards, 
> Alans
>
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