$config['protocol'] = 'smtp';
$config['smtp_host'] = 'smtp.163.com';
$config['smtp_user'] = '******@163.com';
$config['smtp_pass'] = '******';
$config['mailtype'] = 'html';
$config['validate'] = true;
$config['priority'] = 1;
$config['smtp_port'] = 25;
$config['wordwrap'] = TRUE;