We have Google Apps enabled for our domain, but are using double delivery; mail from other mailservers gets delivered on our mailserver and forwarded to Google Apps. If users send email to each other from Google Apps itself the email is delivered within Google Apps itself, as that's setup to handle that domain too. Can I somehow set up Google apps so it routes mail send to that domain through our server first like other external servers would do?
Edit: I can forward all the mails to our mailserver from Google apps, but then the mails get into a forwarding loop ofcourse. Is there a possibility for postfix to not forward when the email is forwarded from google apps?