title: https timeouts on AWS elastic beanstalk app
body: <p>We're having a bizarre issue on one of our Elastic Beanstalk apps, where every https connection results in a timeout. Verified that the cert itself is fine via <code>openssl s_client</code>, so it looks like an issue with the load balancer - but everything reads fine there too, so I'm a little stumped. </p>
  
  <p>We're not using Route 53 (managing DNS over on namecheap) and our cert was purchased externally (not using AWS cert manager).</p>
  
  <p>My main questions are:</p>
  
  <ul>
  <li><p>I don't have access to our Namecheap account but I've been assured everything is in line over there - am I on the right track by focusing on the load balancer/aws config as the culprit, or does this sound like it could be some weird DNS misconfiguration?</p></li>
  <li><p>Are there good reasons to avoid using the AWS cert manager when not managing DNS via route 53? If using an AWS-supplied cert could resolve this, I'm happy to go that route instead. <a href="https://stackoverflow.com/questions/41513512/aws-elastic-beanstalk-namecheap-ssl-configuration">This</a> question is very similar but deals with AWS-supplied certs.</p></li>
  </ul>