I have my mail system set up with 11 Postfix mail servers on my LAN servers that send mail out through a single Postfix mail gateway.
mx for my domain is to google mail servers as mail accounts are handled there. When an application on one of my servers tries to send mail to a mail account on my domain it fails: Recipient address rejected: User unknown in relay recipient table; It's obviously looking locally for that user. How do I configure the mail servers and gateway to send mail to accounts on my domain so they can be received by the google mail servers?