title: Laravel: Expected response code 220 but got code "", with message ""
body: <p>I am using the below Mailtrap configuration for my Laravel (5.3) Homestead app but I get the following error whenever I use the Mail Facade </p>
  
  <p><code>Expected response code 220 but got code "", with message ""</code></p>
  
  <h2>.env</h2>
  
  <pre><code>MAIL_DRIVER=smtp
  MAIL_HOST=mailtrap.io
  MAIL_PORT=2525
  MAIL_USERNAME=**************
  MAIL_PASSWORD=**************
  MAIL_ENCRYPTION=null
  </code></pre>
  
  <h2>Controller</h2>
  
  <pre><code>    public function send()
      {
        $result = Mail::send('emails.test',['content' =&gt; 'This is the email Content'], function($message) {
          $message-&gt;from('noreply@mydomain.com');
          $message-&gt;to('my@email.com')
          -&gt;subject('Test Email');
  
        });
  
        return $result;
      }
  </code></pre>
  
  <p>I've tried <code>MAIL_ENCRYPTION=ssl</code> but I end up with <code>Connection could not be established with host mailtrap.io [ #0]</code></p>
  
  <p>Could someone advice or probably tell me what I am doing wrong?</p>