public function postSmtp()
 {
     if (!Input::has('id')) {
         return Redirect::route('setting.smtp')->with('error', 'Required parameter(s) missing.');
     }
     try {
         $input = Input::all();
         $setting = SmtpSettings::find($input['id']);
         $setting->fill($input);
         $this->flash($setting->save());
         return Redirect::route('setting.smtp');
     } catch (Illuminate\Database\Eloquent\ModelNotFoundException $e) {
         App::abort(404);
     }
 }