Hi Ralph, I'll add a couple of thoughts, but not really an answer. On Tue, 14 Jul 2009, Jarosch, Ralph wrote: > If I connect from an branch office with the subnet 10.37.34.*/24 to an https website i´ve no Problems. > If I do the same from another location with an subnet like 10.39.85.*/24 I get the following error message. Presumably you're using the same URL to test in both places and the same proxy settings? I'll note in passing that you're running a very ancient version of squid (2.5.STABLE12). I doubt an upgrade would fix your problem, but at some point, you should consider an upgrade nonetheless. > The requested URL could not be retrieved > -------------------------------------------------------------------------------- > While trying to retrieve the URL: http.yyy.xxx:443 > The following error was encountered: > Unable to determine IP address from host name for > The dnsserver returned: > Name Error: The domain name does not exist. > 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 webmaster. > -------------------------------------------------------------------------------- > Generated Tue, 14 Jul 2009 08:10:39 GMT by xxxxxxx (squid/2.5.STABLE12) > > The requester url was https://www.ebay.com It's a little odd that you removed the URL from the output, only to tell us it afterward, but how and ever. Also, you've removed the name of the web proxy that generated the error, which is a little unhelpful as you appear to have 5 proxy servers. What the above error tells you is that the squid web proxy couldn't get a DNS response for the site you wanted to go to, ie " The cache was not able to resolve the hostname presented in the URL." It seems surprising that that problem would happen in a repeatable way that affected one client but not another. I note that you have several parent cache peers: > cache_peer 10.37.132.5 parent 3128 7 no-query proxy-only no-digest sourcehash > cache_peer 10.37.132.6 parent 3128 7 no-query proxy-only no-digest sourcehash > cache_peer 10.37.132.7 parent 3128 7 no-query proxy-only no-digest sourcehash > cache_peer 10.37.132.8 parent 3128 7 no-query proxy-only no-digest sourcehash I wonder could it be that only one of the cache peers is having DNS issues? Could you point a browser directly at each individual parent cache and see can you get the webpage you're looking for. Gavin