获取错误“；“没有到主机的路线”；对于JangoSmtp Cakephp配置

这是我的密码：

    function sendMail($template = null, $to_email = null, $from_email = null,
   $subject = null,  $contents = array()) {
$this->Email->to  = $to_email;
$this->Email->subject = $subject;
$this->Email->from =$from_email;
$this->Email->template = $template;
$this->Email->sendAs = 'html';

$this->Email->smtpOptions = array(
    'timeout'=>'30',
    'port' => '25',
    'host' => 'relay.jangosmtp.net',
    'username' => 'users',
    'password' => 'pass',
    'transport' => 'Smtp',
    'tls' => true
);
$this->Email->delivery = 'smtp';


    $this->set('contents', $content);
    $this->Email->send();

}

我收到错误，因为“没有到主机的路由”有人能帮我解决这个问题吗？

没有到主机的路由”表明这不是脚本的问题，更可能是邮件服务器的配置问题