f邮件发送改为ssl，原未加密模式不能用了

application/controllers/sendmail.php

@@ -54,8 +54,8 @@ class Sendmail extends CI_Controller
         }
         $this->load->library('email');
         $config['protocol'] = 'smtp';
-        $config['smtp_host'] = 'hwsmtp.exmail.qq.com';//ssl://smtp.sendgrid.net';
-        $config['smtp_port'] = 25;
+        $config['smtp_host'] = 'ssl://hwsmtp.exmail.qq.com';//ssl://smtp.sendgrid.net';
+        $config['smtp_port'] = 465;
         $config['smtp_user'] = 'noreply02@chinahighlights.net';//'zm198311@yahoo.com.cn';
         $config['smtp_pass'] = 'eHgb2Z8G\HbR';//cits@123';
         $config['smtp_timeout'] = 3600;