[wlug] Allowing PBL'ed IP addresses in Postfix

Hi, Has anyone had experience with configuring Postfix to allow inbound client SMTP connections from NZ-based IP addresses that have been Policy Block Listed (PBL'ed) by their ISP? Spark have PBL'ed most or all of their home and small business fibre/*DSL connection IP addresses. 2degrees have PBL'ed most/all of their cellular data IP addresses. I'm trying to support a user to send email from their cellphone email client. Cheers David