Reset old Hostname in OS X Lion

Question

Everytime I change the Hostname of my mac it starts to work but doesn't forget the old Hostname. For example:

• hostname: example.com
• ping example.com - it points to my computer
• so, I change hostname to example.local
• ping example.com - it still points to my computer

What is wrong?

I've tried to flush DNS, change using command changeip, use the server.app for OS X Lion, etc.

Thanks.

Answer 1

Under System Preferences > Network > Advanced > DNS, DNS Servers were set to 127.0.0.1. Strangely it was the problem.

I solved this just removing it clicking on - at the bottom of the list. Automatically it set to the right DNS Server.