title: CORS with POSTMAN
body: <p>This subject has been asked a couple of time, but I still don't understand something:</p>
  
  <p>When I read answers about </p>
  
  <blockquote>
    <p>No 'Access-Control-Allow-Origin' header</p>
  </blockquote>
  
  <p>issue, it says a setting should be set on the requested server in order to allow cross domain: <code>add_header 'Access-Control-Allow-Origin' '*';</code>.</p>
  
  <p>But, please tell me why when asking from <strong>postman</strong> (which is a client), It's working like a charm and I have a response from the requested server?</p>
  
  <p>Thank you</p>