why doesn't email get sent?

 Hello fellow programmers,
I need some advice on why I am unable to have my "Contact Us" does not send email.  Godaddy is the host, so I know that I cannot use Gmail or its settings.  I have been going through many posts on how to have email work when sending from a web page.  Been trying unsuccessfully for 2 weeks.  Can someone tell me howcome this code doesn't work please?  The contact us page is derived from a master page.  I get no errors, or emails
Web.config
 
<system.net>
      <mailSettings>
        <smtp from="">
            <network host="relay-Hosting.secureserver.net"/>
        </smtp>
      </mailSettings>
 &l ...