Codeigniter not sending email with smtp settings

I have the email.php in config folder:

$config = Array(
    'protocol' => 'tls',
    'smtp_host' => 'mail.lifepro.ro',
    'smtp_port' => 465,
    'smtp_user' => 'office@lifepro.ro',
    'smtp_pass' => 'xxxxxxxxxxxx',
    'mailtype' => 'html',
    'charset' => 'utf-8',
    'wordwrap' => TRUE
);

and this function in helper

    function email_send($to, $subject, $body) {

        $ci = get_instance();
        $ci->email->from('office@lifepro.ro', 'Office LifePro');
        $ci->email->to($to);
        $ci->email->cc('office@lifepro.ro');

        $ci->email->subject($subject);
        $ci->email->message($body);

        if($ci->email->send())
            return true;
    }

The problem is that the CI is sending the email even if I type wrong credentials. Why is happening this? I know email.php from config folder is loaded automatically.