function blacklist_check()
 {
     $target = wpcf7_array_flatten($this->posted_data);
     $target[] = $_SERVER['REMOTE_ADDR'];
     $target[] = $_SERVER['HTTP_USER_AGENT'];
     $target = implode("\n", $target);
     return wpcf7_blacklist_check($target);
 }
 private function blacklist_check()
 {
     $target = wpcf7_array_flatten($this->posted_data);
     $target[] = $this->get_meta('remote_ip');
     $target[] = $this->get_meta('user_agent');
     $target = implode("\n", $target);
     return wpcf7_blacklist_check($target);
 }