Ideally you should upgrade to 3.4.4 or higher. I was able to download the file just fine through my transparent squid. 503 error is odd, this is an indication of a server side issue but I realize it is coming from squid. Amos, any ideas? -----Original Message----- From: nuhll [mailto:nuhll@xxxxxx] Sent: Wednesday, August 20, 2014 9:51 AM To: squid-users@xxxxxxxxxxxxxxx Subject: Re: server failover/backup I found out why. If i go direct to http://llnw.blizzard.com/hs-pod/beta/EU/4944.direct/Updates/hs-6187-6284-Win _deDE-final.MPQ it works (without proxy). If i enable proxy, it wont work and i get 503. BTW i upgraded to Squid Cache: Version 3.3.8 -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/ONLY-Cache-certain-Websit es-tp4667121p4667279.html Sent from the Squid - Users mailing list archive at Nabble.com.