title: javax.naming.NamingException SwiftMQ Messagingsystem
body: <p>We use SwiftMQce 12 and have the following situation.</p>
  <p>Time by time new SwiftMQ clients cannot connect and produce this message:</p>
  <pre><code>javax.naming.NamingException: 
  unable to connect, exception = javax.jms.JMSException: 
  Unable to create a connection to: [[ServerEntry, hostname=_IP1_, port=4001]]
  </code></pre>
  <p>SwiftMQ and the other clients are still running.</p>
  <p><em>IP1</em> is configured in the hosts-Datei.</p>
  <p>The &quot;solution&quot; ist to restart SwiftMQce.</p>
  <p>Any idea what can be the reason?</p>
  <p>Thanks.</p>