Postfix

If you have recently installed a fresh Drupal 8 site on Ubuntu 16.04 with Nginx running on it and you are getting Unable to send e-mail. Contact the site administrator if the problem persists notice after submitting contact form, you are missing an important element for your site to functions properly. You could be missing important information about available updates, as Drupal uses cron to sends notification e-mails once updates are available. The following written applies not only to Drupal…