这里是我的代码：
<?PHP
require_once 'Swift/lib/swift_required.PHP';
$transport = Swift_SmtpTransport::newInstance('smtp.gmail.com',465)
->setUsername('me@ff.com')
->setPassword('pass');
$mailer = Swift_Mailer::newInstance($transport);
$message = Swift_Message::newInstance('Wonderful Subject')
->setFrom(array('me@ff.com' => 'MY NAME'))
->setTo(array('you@ss.com' => 'YOU'))
->setBody('This is the text of the mail send by Swift using SMTP transport.');
//$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);
?>
在运行时出现此错误…
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
GMail的SMTP需要加密。使用：
Swift_SmtpTransport::newInstance('smtp.gmail.com',465,"ssl");