trying to send mail using swift mailer, gmail smtp, php

Question

Here is my code:

<?php
require_once 'Swift/lib/swift_required.php';

$transport = Swift_SmtpTransport::newInstance('smtp.gmail.com', 465)
  ->setUsername('[email protected]')
  ->setPassword('pass');

$mailer = Swift_Mailer::newInstance($transport);
$message = Swift_Message::newInstance('Wonderful Subject')
  ->setFrom(array('[email protected]' => 'MY NAME'))
  ->setTo(array('[email protected]' => 'YOU'))
  ->setBody('This is the text of the mail send by Swift using SMTP transport.');
//$attachment = Swift_Attachment::newInstance(file_get_contents('path/logo.png'), 'logo.png');  
//$message->attach($attachment);
$numSent = $mailer->send($message);
printf("Sent %d messages\n", $numSent);
?>

AFter RUNNING GOT THIS ERROR...

Fatal error: Uncaught exception 'Swift_TransportException' with message 'Expected response code 220 but got code "", with message ""' in /home/sitenyou/public_html/Swift/lib/classes/Swift/Transport/AbstractSmtpTransport.php:406

Stack trace: 
#0 /home/sitenyou/public_html/Swift/lib/classes/Swift/Transport/AbstractSmtpTransport.php(299): Swift_Transport_AbstractSmtpTransport->_assertResponseCode('', Array) 
#1 /home/sitenyou/public_html/Swift/lib/classes/Swift/Transport/AbstractSmtpTransport.php(107): Swift_Transport_AbstractSmtpTransport->_readGreeting() 
#2 /home/sitenyou/public_html/Swift/lib/classes/Swift/Mailer.php(74): Swift_Transport_AbstractSmtpTransport->start() 
#3 /home/sitenyou/public_html/sgmail.php(16): Swift_Mailer->send(Object(Swift_Message)) 
#4 {main} thrown in /home/sitenyou/public_html/Swift/lib/classes/Swift/Transport/AbstractSmtpTransport.php on line 406

Answer 1

GMail's SMTP requires encryption. Use:

Swift_SmtpTransport::newInstance('smtp.gmail.com', 465, "ssl");