protected function SetError($msg) {
    $this->error_count++;
    if (($this->Mailer == 'smtp') and ($this->smtp !== null)) {
      $lasterror = $this->smtp->getError();
      if (!empty($lasterror) and array_key_exists('smtp_msg', $lasterror)) {
        $msg .= '<p>' . $this->Lang('smtp_error') . $lasterror['smtp_msg'] . "</p>\n";
      }
    }
    $this->ErrorInfo = $msg;
  }