Bypass RBL check within Postfix for a domain name

[PGareth]

I have got a client that is blocked by Barracudacentral RBL. I have a few RBLs enabled within postfix. I am running Plesk 11.5.30 & Postfix 2.8.14. How do I bypass the RBL checks within Postfix without removing the RBL checking? I would like to bypass the whole domain or if that isn't possible then just the email address.

Any help greatly appreciated.