php - PHPMailer DSN How to get error when address not exist

I use PHPMailer for PHP5/6 and i try to make script witch will send mail and get error like "550 No Such User Here".

I read about DSN, and try tips from this How to set DSN (Delivery Status Notification) for PHPMailer? topic, but it's doesnt work. (i found functin recipient where was

return $this->sendCommand(
        'RCPT TO',
        'RCPT TO:<' . $toaddr . '>',
        array(250, 251)
    );
)
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and i try change link

'RCPT TO:<' . $toaddr . '>',
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to

'RCPT TO:<' . $toaddr . '> NOTIFY=SUCCESS,FAILURE ORCPT=rfc822;' . $toaddr ."" .self::CRLF,
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but i doesnt work. I was try add it by function AddCustomHeader but it fail too.

This is my code:

private function send($username, $password, $from, $nameFrom, $replay, $subject, $email) {
    try {
        $_ = Zend_Registry::get('Zend_Translate');
        $mail = new PHPMailer(true);

        $mail->IsSMTP();
        $mail->SMTPDebug = 2;
        $mail->SMTPAuth = true;
        $mail->SMTPSecure = "tls";
        $mail->Host = "smtp.gmail.com";
        $mail->Port = 587;
        $mail->SMTPKeepAlive = true;
        $mail->Username = $username;
        $mail->Password = $password;
        $mail->SetFrom($from, $nameFrom);
        $mail->AddReplyTo($replay, $nameFrom);
        $mail->Subject = $subject;
        $mail->MsgHTML($this->_content);
        $mail->AddAddress($email);
//            $mail->AddCustomHeader( "X-Confirm-Reading-To: [email protected]" );
//            $mail->AddCustomHeader( "NOTIFY=SUCCESS,FAILURE ORCPT=rfc822; $email" );
//            $mail->AddCustomHeader( "Disposition-Notification-To: [email protected]" );
//            $mail->AddCustomHeader( "Return-receipt-to: [email protected]" );
        if (!$mail->Send()) {
            return array(
                'status' => false,
                'message' => $mail->ErrorInfo
            );
        } else {
            return array(
                'status' => true,
                'message' => $_->_('__MAIL_WAS_SEND__')
            );
        }
    } catch (Exception $e) {
        return array(
                'status' => false,
                'message' => $e->getMessage()
            );
    }
    catch (phpmailerException $e) {
        return array(
                'status' => false,
                'message' => $e->getMessage()
            );
    }
}
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In result i have need script where: When i write real address, ex [email protected] it will be send, but when i write fake address, ex [email protected] will return me code 550, or any other error.

Is there any options to do this ? becouse i need to get and save all information.