Amos, The negative_ttl was set to Defaults, which I've now set to 0. The negative_dns_ttl is unset ( as a Default), so I've not made any changes in this. Let's see if this works. > Also check that they are actually being generated by your own squid, your didn't understand this...? > upstream ISP may be having trouble with an old transparent proxy. Do u mean this is an old proxy, as I've updated all the packages for Ubuntu from there repository site. & 2.6 is the only latest version which I could get. Although I know, in real it is not the latest version, as the latest stable version of squid is 3.0 stable 10, to which I want to anyway update. But I was waiting to resolve this problem 1st & once everything works properly, I wanted to upgrade it to 3.0 So far I'm searching for the documentation for, how to upgrade the squid 3.0 in ubuntu as some parameters are changed in Ubuntu & I need to do the customized installation. Anyone Correct me if I'm wrong. ~~~~~~~~~~~~~~~~~~~ Thanks & Regards, Sameer Shinde. Sr. Customer Support Engineer, Email:- s2sameer@xxxxxxxxxxx M:- +91 98204 61580 http://www.geocities.com/s9sameer If everyone is thinking alike, then somebody isn't thinking. > Date: Tue, 2 Dec 2008 12:45:35 +1300 > Subject: RE: errors while opening sites > From: squid3@xxxxxxxxxxxxx > To: s2sameer@xxxxxxxxxxx > CC: msebedio@xxxxxxxxxxxx; squid-users@xxxxxxxxxxxxxxx > >> >> Dear Mariel, >> >> This is not happening about any particular site. This can happening with >> any site >> & in next 3-5mins time the same site/web page works properly. >> > > Just a thought. > Check that negative_ttl is set to 0 seconds (default when unset on older > squid was 5 minutes which is suspiciously similar) and that > negative_dns_ttl is at least 10 seconds (or unset for default). > > Also check that they are actually being generated by your own squid, your > upstream ISP may be having trouble with an old transparent proxy. > > Amos > >> >> ~~~~~~~~~~~~~~~~~~~ >> Thanks & Regards, >> Sameer Shinde. >> Sr. Customer Support Engineer, >> Email:- s2sameer@xxxxxxxxxxx >> M:- +91 98204 61580 >> http://www.geocities.com/s9sameer >> If everyone is thinking alike, then somebody isn't thinking. >> >> >> >> >>> Date: Mon, 1 Dec 2008 09:00:03 -0200 >>> From: msebedio@xxxxxxxxxxxx >>> To: s2sameer@xxxxxxxxxxx >>> CC: squid3@xxxxxxxxxxxxx; squid-users@xxxxxxxxxxxxxxx >>> Subject: Re: errors while opening sites >>> >>> Clear the cache, may be the source for your problem. I had this problem >>> whit another URL and I had resolved doing this. >>> >>> Bye, Mariel >>> >>> Sameer Shinde wrote: >>>> Dear Amos, >>>> >>>> Thanks for the reply. >>>> We are using the same DNS servers for our existing proxy server which >>>> is ISA2000 & is working properly without any problems. >>>> We want to shift from MS-ISA2000 proxy server to Linux Squid proxy >>>> server, so we are building up this new proxy server. >>>> >>>> More over if I access the internet from the Ubuntu proxy server itself, >>>> we don't get any such errors. >>>> >>>> Can you / anyone let me know how can we resolve these issue. >>>> Also for your information that, so far ubuntu server is just a member >>>> server in our enviornment & there is no DNS server configured in Ubuntu >>>> server. >>>> May be this will help you for finding some outputs. >>>> >>>> >>>> ~~~~~~~~~~~~~~~~~~~ >>>> Thanks & Regards, >>>> Sameer Shinde. >>>> Sr. Customer Support Engineer, >>>> Email:- s2sameer@xxxxxxxxxxx >>>> M:- +91 98204 61580 >>>> http://www.geocities.com/s9sameer >>>> If everyone is thinking alike, then somebody isn't thinking. >>>> >>>> >>>> >>>>> Date: Mon, 1 Dec 2008 23:19:58 +1300 >>>>> From: squid3@xxxxxxxxxxxxx >>>>> To: s2sameer@xxxxxxxxxxx >>>>> CC: squid-users@xxxxxxxxxxxxxxx >>>>> Subject: Re: errors while opening sites >>>>> >>>>> Sameer Shinde wrote: >>>>> >>>>>> Dear All, >>>>>> >>>>>> I've installed squid 2.6 installed on my ubuntu8.0.4 server. I'm >>>>>> getting errors like attached one frequently. >>>>>> It says, "Unable to determine the IP address from host name >>>>>> "anything", but after some time say even after 5 mins the same >>>>>> page / site opens. I'm not able to figure out why is this happening. >>>>>> The error appears for any domain & is not particular to any domain. >>>>>> >>>>>> Can anyone help me out in this. >>>>>> I'm not able to bring the server in live mode due to this problem. >>>>>> >>>>> The DNS server being used by your system for lookups is having major >>>>> problems. >>>>> You will need to do some serious debugging to find out why. Things to >>>>> look for are DNS server overload, traffic congestion, lack of >>>>> recursive >>>>> queries, etc. >>>>> >>>>> Amos >>>>> >>>>> >>>>>> >>>>>> -------------------------------------------------------------------------- >>>>>> Error Message: >>>>>> The requested URL could not be retrieved. >>>>>> While trying to retrieve the URL: >>>>>> http://www.squidguard.org/Doc/install.html >>>>>> >>>>>> The following error was encountered: >>>>>> Unable to determine IP address from the host name for >>>>>> www.squidguard.org >>>>>> >>>>>> 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. >>>>>> ----------------------------------------------------------------------------- >>>>>> >>>>>> ~~~~~~~~~~~~~~~~~~~ >>>>>> Thanks & Regards, >>>>>> Sameer Shinde. >>>>>> Sr. Customer Support Engineer, >>>>>> Email:- s2sameer@xxxxxxxxxxx >>>>>> M:- +91 98204 61580 >>>>>> http://www.geocities.com/s9sameer >>>>>> If everyone is thinking alike, then somebody isn't thinking. >>>>>> >>>>>> >>>>>> >>>>>> _________________________________________________________________ >>>>>> Access your email online and on the go with Windows Live Hotmail. >>>>>> http://windowslive.com/Explore/Hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_access_112008 >>>>>> >>>>> -- >>>>> Please be using >>>>> Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10 >>>>> Current Beta Squid 3.1.0.2 >>>>> >>>> >>>> _________________________________________________________________ >>>> Get more done, have more fun, and stay more connected with Windows >>>> Mobile®. >>>> http://clk.atdmt.com/MRT/go/119642556/direct/01/ >>>> >>>> >>>> >>> >>> >>> -- >>> Lic. Mariel Sebedio >>> Division Computos y Sistemas >>> Tel (02944)-445400 int 2307 >>> INVAP S.E. - www.invap.com.ar _________________________________________________________________ Get more done, have more fun, and stay more connected with Windows Mobile®. http://clk.atdmt.com/MRT/go/119642556/direct/01/
