externally host mx server 1.0.2

[johnnyrevell]

I have a user who wants to host his mail with google
I have changed his site bind records in /var/cache/bind and /etc/ispcp/bind/working
Hi mail is now successfuly being hosted by google. All external mail is being routed to google

However he has a "contact us" form on the site. Initially all mail for this was going to the server's postfix mailbox. I have removed and disabled all mailboxes in his account (set to -1). I have also manually commented out all references to his site in /etc/postfix/ispcp/domains and /etc/ispcp/postfix/working/domains, restarted postfix and bind. Postfix is still trying to send mail to the local server rather than google. I believe in 1.0.2 postfix hosts mail virtually so postmap will not rebuild local tables.

Can anyone help me to get the server to recognise the externally hosted MX server?

Thanks

John