title: XMPP server does not respond to Smack login request
body: <p>I'm trying to establish a connection to an XMPP server using smack.</p>
  
  <pre><code>ConnectionConfiguration cf = new ConnectionConfiguration("jabber.ccc.de");
  cf.setTruststorePassword("changeme");
  this.connection = new XMPPConnection(cf);
  this.connection.connect();
  this.connection.login("user", "password");
  </code></pre>
  
  <p>But whenever logging in I get an XMPPException (No response from the server.: ) and the socket gets closed.</p>
  
  <p>Any ideas what's going wrong here?</p>
  
  <p>Regards</p>