laravel custom validate

 protected function validator(array $data)
    {
        return Validator::make($data, [
        $email      = $data['email'];
        $emailfakes = ['naver.com','mailnator.com','nwytg.net','yopmail.com'];

        $validator =  Validator::make($data, [
            'name' => 'required|string|max:255',
            'email' => 'required|string|email|max:255|unique:users',
            'password' => 'required|string|min:6|confirmed',
        ]);

        foreach($emailfakes as $emailfake){

            $emailpart = '/'.$emailfake.'/';

            if (preg_match($emailpart,  $email)) {

                $validator->after(function ($validator) {
                    $validator->errors()->add('email', 'Invalid email format!');
                });
            }
        }

        return $validator;
    }