I have a linux deluxe hosting account on godaddy.com and I can host multiple websites on that account. Not all the websites are .com and I've bought the domain names from different registrars (just changing the name servers in order to host that domain name on godaddy).
Now, I wish to use google apps for one of my hosted sites and I have to change the MX record on gogaddy with google servers name (as in this tutorial). The problem is that google apps doesn't take the changes. What can I do?