[Hampshire] Forwarding Server Email

Hi,

A little while ago, I stopped using my own mail server, and started
using Google Apps for my domain. So far, this has worked great. The
only problem I have now is that I don't get to see any of the normal
email notifications I used to get from things such as cron jobs etc.

What is the simplest configuration on my server to get the internal
email messages forwarded to my google apps account?

Thanks!
--
Philip Stubbs