title: herokuapp subdomain not shown externally
body: <p>I have a <code>Facebook</code> app running on <code>Heroku</code>. The app has been created directly from the Facebook app creation wizard. The subdomain is like myapp.herokuapp.com. The problem is when I connect to an external <code>MySQL DB</code>, another subdomain (amazonaws) is presented to the MySQL server. This is the answer of MySQL server, which does not grant access because of unknown domain.</p>
  
  <p><code>Could not connect: Access denied for user 'mauro_wrdp2'@'ec2-23-22-65-197.compute-1.amazonaws.com' (using password: YES)</code></p>
  
  <p>What do I need to do to have herokuapp subdomain presented instead on Amazon AWS?</p>