I went ahead and almost done, but there is an issue.
- In the Newdomain.com panel I set up the DNS zone (all records) to be the same IP of the Hosting (Godaddy)
- In Godaddy I added a secondary domain in the hosting panel
Now I have Home page: newdomain.com (mysite.com/newinstall)
But any other pages (like newdomain.com/page) is broken and display:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
The Newdomain is .IT , is this a problem or I'm missing something?