title: Received empty response from Zabbix Agent at [XX.XXX.XX.XX]
body: <p>I am trying to register zabbix agent to zabbix server but facing this error[<strong>Received empty response from Zabbix Agent at [XX.XXX.XX.XX]. Assuming that agent dropped connection because of access permissions.</strong>] in zabbix server UI.</p>
  <p>I have elb top of Zabbix server and using elb dns name in zabbix agent conf file. Seems registration is happening but agent server is not active[Availability]<a href="https://i.stack.imgur.com/7QvyV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7QvyV.png" alt="enter image description here" /></a>.</p>
  <pre><code>**conf file** 
  
      Server=elb end point
      ServerActive=elb end point
  </code></pre>
  <p>Any lead would be appreciated.</p>