windows - What can cause a DNS lookup to ignore a hosts file entry?

I'm having a DNS resolving issue that is affecting the performance of my locally hosted web site when browse it on my local machine. If I attach my network's DNS suffix to my local machine name when I go to the URL in my browser, the site has terrible load times (100+ times slower) than without the DNS suffix.

I thought I could fix this by using my hosts file to avoid the need for a lookup. I added an entry to my hosts file like this

127.0.0.1    myMachine.MyDnsSuffix

But this didn't change the load times, even after a reboot. Although it is not important to resolve this specific problem, I would really like to know why this happens.

Also, when I run nslookup on the domain myMachine.MyDnsSuffix, I notice it uses my network's DNS server to find the IP. Could this be related to my problem or am I just mis-understanding how nslookup works?

Answer

I believe nslookup is used to test a DNS server itself, as opposed to utilizing your HOSTS file. http://support.microsoft.com/kb/200525 seems to indicate as much.

Try just a simple ping. Does ping myMachine.MyDnsSuffix resolve to the loopback address you have specified in your HOSTS file?

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