Try port 587

app/config/core.php

@@ -41,18 +41,20 @@ error_reporting(E_ALL & ~E_STRICT & ~E_DEPRECATED);
  * In production mode, flash messages redirect after a time interval.
  * In development mode, you need to click the flash message to continue.
  */
-Configure::write('debug', 1);
+Configure::write('debug', 0);
 
 Configure::write('version', '1.0.1');
 
 $host = $_SERVER['HTTP_HOST'];
 
 Configure::write('smtp_settings', array(
-  'port' => '25',
+  'port' => '587',
   'timeout' => '60',
   'host' => 'smtp-relay.gmail.com',
   'username' => 'sales',
-  'password' => 'S%s\'mMZ})MGsg$k!5N|mPSQ>}'));
+  'password' => 'S%s\'mMZ})MGsg$k!5N|mPSQ>}',
+  'tls' => true
+  ));