Fatal error when sending email with Zend_Mail - php

Question

I write the following code in test.php
<?php
require_once 'Zend/Mail.php';
require_once 'Zend/Mail/Transport/Smtp.php';
$subject="send my email from qq to 163";
$mailbody='stay hungry stay foolish';
$envelope='2546606474#qq.com';
$config = array('auth' => 'login',
'username' => '2546606474',
'password' => 'XXXXXXXXXXX');
$transport = new Zend_Mail_Transport_Smtp('smtp.qq.com',$config);
$mail = new Zend_Mail('GBK');
$mail->setBodyHtml($mailbody);
$mail->setFrom($envelope, '2546606474');
$mail->addTo('kanonwind#163.com','kanonwind');
$mail->setSubject('we create future with our hands');
$mail->send($transport);
?>
I test in localhost and I successfully get an email from 2546606474#qq.com
then I upload the files to my to my web to test,mistakes occur:
Fatal error: Uncaught exception 'Zend_Mail_Protocol_Exception' with message 'Connection timed
out' in /home/u629656826/public_html/mr2/Zend/Mail/Protocol/Abstract.php:277
Stack trace:
#0 /home/u629656826/public_html/mr2/Zend/Mail/Protocol/Smtp.php(167):
Zend_Mail_Protocol_Abstract->_connect('tcp://smtp.qq.c...')
#1 /home/u629656826/public_html/mr2/Zend/Mail/Transport/Smtp.php(199): Zend_Mail_Protocol_Smtp- >connect()
#2 /home/u629656826/public_html/mr2/Zend/Mail/Transport/Abstract.php(348):
Zend_Mail_Transport_Smtp->_sendMail()
#3 /home/u629656826/public_html/mr2/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->sen
(Object(Zend_Mail))
#4 /home/u629656826/public_html/mr2/test.php(21): Zend_Mail->send(Object
(Zend_Mail_Transport_Smtp))
#5 {main} thrown in /home/u629656826/public_html/mr2/Zend/Mail/Protocol/Abstract.php on line 277
I do not know how to solve the problems.