are you running DNS on the same box as squid or on the LAN?
create a list of domain names, like 20-25 in a file like names.lst and
run dig -f names.lst - gives you an idea how well DNS is working.
> Sometimes everything works fine but, sometimes the system is extremely
> slow and I get the following error on browser:
>
> The requested URL could not be retrieved
>
> While trying to retrieve the URL:
> http://us.mc625.mail.yahoo.com/mc/showFolder;_ylt=ArsEohpYUGGoVGGsFGqujqJjk70X?
>
>
> The following error was encountered:
>
> Unable to determine IP address from host name for
> us.mc625.mail.yahoo.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 wh_at_msdrd.com.
> Generated Thu, 20 Nov 2008 01:07:31 GMT by localhost (squid/3.0.PRE5)
> ------
>
> I added my dns servers to the squid.conf with the dns_nameservers ....
>
>
>
>
Received on Thu Nov 20 2008 - 02:26:42 MST
This archive was generated by hypermail 2.2.0 : Thu Nov 20 2008 - 12:00:03 MST