title: Emails always queued with status 250
body: <p>My application uses Simple E-mail Service from AWS + GoogleMail for sending mails to clients.</p>
  
  <p>But I have a lot of complaints about mail never received, even after more than 24 hours.</p>
  
  <p>In the logs, I see:</p>
  
  <blockquote>
    <p>250 2.0.0 Ok: queued as XXXXXXX
    reportingMTA: a9-82.smtp-out.amazonses.com</p>
  </blockquote>
  
  <p>Can anyone tell me:</p>
  
  <ul>
  <li>Is e-mail queued on Amazon OR on recipient server?</li>
  <li>Where can I find rules to help me avoid that?</li>
  </ul>