### 6.1.3 An alternative approach

Fil fil@rezo.net has an alternative approach based on virtual maps and regular expressions, as described at:

- (French) http://listes.rezo.net/comment.php
- (English) http://listes.rezo.net/how.php

This is a good (and simpler) alternative if you don't mind exposing an additional hostname in the domain part of the addresses people will use to contact your list. I.e. if people should use `mylist@lists.dom.ain` instead of `mylist@dom.ain`.