title: sendgrid mail not working on centos server
body: <p>I have configured sendgrid mail on django project and it works fine in local server, but when I deployed on centos server on digital ocean it is not sending any mail, hope some body can help me. Mail setting as follows.</p>
  
  <pre><code>EMAIL_HOST = 'smtp.sendgrid.net'
  EMAIL_HOST_USER = 'usr'
  EMAIL_HOST_PASSWORD = 'pwd'
  EMAIL_PORT = 587
  EMAIL_USE_TLS = True
  </code></pre>