So remove your CNAME in your DNS, and make an A record for the IP Address of the web server. Silly, I know, and it shouldn't make any difference, but it's definitely the case. Everything you've done is good, and it's what I'd call a bug in how IE gets it's WPAD info and connects to the web server.įirst of all, you can't use a CNAME record for WPAD. But it's not documented ANYWHERE, and it took me ages to sort it out in my environment. In case you're still hitting up against this problem, it's actually rather simple to fix. We don't actually use either of those browsers but for the sake of maximum compatibility plus ease of future administration/changes I think it's surely better to get this working via a nice single DNS entry.) Plus, it is only Internet Explorer which allegedly supports web proxy auto discovery via DHCP - neither Firefox nor Safari do. (Note, it is also possible to set the auto config file using DHCP, however we have a multi-site organisation with DHCP provided by a mixture of servers and routers depending on location as well as remote offices using 3G cellular modems which have very basic DHCP facilities. However, it is my understanding that all I should need to do is tick the box for "Automatically detect settings" and Internet Explorer should itself go look for - or, more correctly, - which does also work.Ĭan anyone help me diagnose this problem? I just cannot see what I have missed or what is wrong. I know the config file is syntactically correct because if I manually set Internet Explorer's "use automatic configuration script" to the proxy is clearly being used (ie, I see my browsing show up in log files plus certain sites I've denied come up with my replacement page.) I removed wpad from the DNS global query block list. I've set up DNS entries so host name wpad is a CNAME for the web server. I have set up a file called wpad.dat (essentially, a proxy.pac file renamed) and put it on an internal web site. I am being driven to frustration by this problem.
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