There are many errors that will happen when you design a website then bring it live. The error that I got today is "Can't find the server".
I just moved www.startGBC.com website from Wordpress.com to Godaddy. I worked fine at the first time. Then that error appears. After struggling to find a solution for this. I found that I redirect from non-www to www website which is the reason why dns nameserver doesn't recognize.
The solution is very simple. All you need is to add an alias to the non-www.
It works great now!