title: How do I configure a 404 error page in MODX?
body: <pre><code>http://www.example.com/test1
  http://www.example.com/test2
  http://www.example.com/test3
  </code></pre>
  
  <p>all of these are non-existent pages and redirects to the index.php page, the search engines marks those links as duplicates, they return 200 ok, how to make them return 404 not found?</p>
  
  <p>using modX cms</p>