Does anyone have any thoughts on this?

As I see it, we'll need to pass all incoming emails through a script and then send the text as a PM to the correct user (and send any incorrectly addressed mails to the admin).

The difficulty is making the script that the incoming emails are sent to. Mailing list programs like majordomo pass all incoming emails (to a certain address) through a script, so that it can subscribe and unsubscribe people from the lists.

This system would need server root access (as you'll have to modify sendmail's email routing for a particular domain).

The question I have is:
- What language do we have to program this script in? Because it's run by the server when an email is received, I don't know if we can do it in php.

Anyone any thoughts, or experience in this area?