Re: [squid-users] DNS timeouts - unable to reduce timeout

From: Amos Jeffries <>
Date: Sat, 20 Nov 2010 14:29:31 +1300

On 20/11/10 08:41, wrote:
> Hullo.
> I have a squid 3.1.9, which has an acl that needs to know the DNS domain
> name of a target IP (yes, I know it slows things down, but it has to stay)
> I have a lot of users viewing Flash streams hosted by Akamai, but Akamai's
> reverse DNS servers for e.g. are currently completely dead.
> Squid is taking 90 seconds to give up on the reverse DNS lookup for
> and proceed with making the connection.
> Unfortunately, the Flash Player only seems to wait 30 seconds before it
> declares the content stream broken.
> I cannot find a setting to make squid timeout DNS faster.
> I have tried increasing 'negative_dns_ttl', but it didn't seem to have any effect.
> 'dns_timeout 10 seconds' had no effect either, which suprised me.

Ouch. Yes that dns_timeout is the option which should have worked.

> The only DNS option I am using is 'dns_nameservers' which points
> at a caching BIND. I am not using an external DNS resolver.

Bind will also have timeout settings somewhere which can help.


Please be using
   Current Stable Squid 2.7.STABLE9 or 3.1.9
   Beta testers wanted for
Received on Sat Nov 20 2010 - 01:29:35 MST

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