I've been trying to create a web application and site collection using intranet.contoso.com. However after the webapp and site collections have been successfully created, the site won't display. I've made sure to add the DNS entry, I've added te ip (10.0.0.21) and host name "intranet.contoso.com" to the server host file, i've flushed the dns, nothing works. I've been told it's an issue with DNS mapping but i'm not sure how to fix it. I've disabled backloopchecking also.
Basically I can only access sites using the default values but when i try to give my site an actual name, host header and ect, it doesn't work.