I get the following error trying to send an email to my Google Apps Email at [email protected] from my Postfix server. to=, relay=local, delay=0.09, delays=0.07/0/0/0.02, dsn=5.1.1, status=bounced (unknown user: "admin") Is there a way I can force it to not use the LOCAL relay and treat [email protected] as outside email and not look for a user in the current postfix configuration. I am trying to email the full email address "[email protected]" not only "admin". I have the Google Apps MX record on mydomain.com + SPF record which before was: v=spf1 include:_spf.google.com ~all (emailing to [email protected] used to work with that record) But I had to change it to v=spf1 a mx ip4:MY.IP.HERE include:_spf.google.com ~all