PHPMailer无法连接到SMTP主机

// Configuration settings for My Site

// Email Settings
$site[\'from_name\'] = \'Manish Dekavadiya\'; // from email name
$site[\'from_email\'] = \'manish@<my-domain>.com\'; // from email address

// Just in case we need to relay to a different server,
// provide an option to use external mail server.
$site[\'smtp_mode\'] = \'enabled\'; // enabled or disabled
$site[\'smtp_host\'] = \"smtp.<my-domain>.com\";
$site[\'smtp_port\'] = 587;
$site[\'smtp_username\'] = \"manish@<my-domain>.com\";
$site[\'smtp_password\']=\"<password>\";

// Grab our config settings
require_once($_SERVER[\'DOCUMENT_ROOT\'].\'/config.php\');

// Grab the FreakMailer class
//echo $_SERVER[\'DOCUMENT_ROOT\'];
require_once($_SERVER[\'DOCUMENT_ROOT\'].\'/lib/MailClass.inc\');

// instantiate the class
$mailer = new FreakMailer();

// Set the subject
$mailer->Subject = \'This is a test\';
 $mailer->SMTPDebug = 1;
// Body
$mailer->Body = \'This is a test of my mail system!\';

// Add an address to send to.
$mailer->AddAddress(\'manish.dekavadiya@gmail.com\', \'Manish Dekavadiya\');

if(!$mailer->Send())
{
    echo \'There was a problem sending this mail!\';
}
else
{
    echo \'Mail sent!\';
}
$mailer->ClearAddresses();
$mailer->ClearAttachments();