[OT] Postfix + Google Apps?


Please ignore if too off topic.

I have a Rails app that sends and receives email via Postfix. I also
have set up Google Apps (http://www.google.com/a) for my domain. By
themselves each works.

I want to find a way to have Postfix accept all email for the domain
except for a few accounts (removed_email_address@domain.invalid, removed_email_address@domain.invalid, etc.) and
forward these to Google Apps mail servers… anyone know how to do
this? Basically my MX records would direct email to IP running Rails
app + Postfix. Then Postfix would slurp up the emails and forward the
special ones on to Google Apps and send all others up the stack to
Rails. This way I’d have the best of both worlds. Ideas?