In google webmaster tools i am getting " Domain name not found" as a HTTP error and URL is sitemap error The url that has the error is the index page http://www.iwantafreemacbook.co.uk/ Its defiantly working. Why is it showing these errors?
Your hoster blocked googlebot i guess. I had the same problem 2 years ago. apache logs could figure it out
you should put robots.txt please read the documentation or click the left navigation in webmaster tools