From: "jan gestre" <m0n0wall dot list at gmail dot com>

> my DMZ is finally setup, i can now send and recieve mails from the 
> outside,
> my only problem now is how will my LAN users be able to login the
> squirrelmail login page by just typing the url of site
> http://mail.example.org instead of typing the internal ip address of the
> server.

Under Services - DNS Forwarder, add a static record "mail - example.org - 
192.168.2.2 - Internal address of mail server" and you are done.

                        Lee