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Re: Nameservers are operational but Squid cannot resolve

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On Sat, Mar 14, 2009 at 3:44 PM, RM <bearmeat@xxxxxxxxx> wrote:
> A few days ago, Squid was working perfectly fine. I have neither made
> changes to Squid nor any changes to system configuration files. In
> fact, I have not even logged into the server since the problems arose.
> Today, I am unable to visit websites while surfing through Squid. When
> my web browser is configured to use the Squid proxy, I get the
> username and password prompt as I should (I use ncsa_auth). However, I
> then get the following error which appears to be DNS related:
>
>
>
> The requested URL could not be retrieved
>
> --------------------------------------------------------------------------------
>
> While trying to retrieve the URL: http://www.google.com/
>
> The following error was encountered:
>
> Unable to determine IP address from host name for www.google.com
> The dnsserver returned:
>
> Refused: The name server refuses to perform the specified operation.
> This means that:
>
>  The cache was not able to resolve the hostname presented in the URL.
>  Check if the address is correct.
> Your cache administrator is root.
>
>
>
>
> My access.log shows the following entries:
>
> 1237099689.372     13 xx.xx.xx.xx TCP_HIT/301 546 GET
> http://google.com/ myusername NONE/- text/html
> 1237099689.515     15 xx.xx.xx.xx TCP_MISS/503 1512 GET
> http://www.google.com/ myusername DIRECT/www.google.com text/html
>
> So it appears that the problem is DNS related, however, I am able to
> resolve domain names with the same nameservers that Squid is using
> when I ping google.com or other domains. I have also tried using other
> nameservers which I have verified that work and Squid refused to
> resolve domains to IP addresses.
>
> Any help is appreciated!
>

Another thing I forgot to mention is that I have tried completely
disabling my IPTables firewall and the problem persisted.


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