Can't access your domain without www prefix? this is a common problem when you change the cname record of your website to different server. this problem is called 'Naked Domain' problem. in this tutorial I will show you how to fix this problem.
1. Forward or Mask your domain
If you are using godaddy.com as a registrar then you can Forward or Mask your domain to fix this naked domain problem. you can see at this article for the complete steps to forward your naked domain to www.yourdomain.com.
2. Using naked domain redirect services
There are some websites that offer free redirection from naked domain to www prefixed domain, my favorite is http://wwwizer.com/
if you have some idea to fix this Naked Domain problem feel free to post your comment. Thanks