DNS in-appr.arpa

We have recently changed our ISP at work and implemented private IP addresses. Our new ISP (AT&T) assigned a /25 classless ip range.

We host the primary nameserver on site an use AT&T as a secondary. AT&T requires the reverse ip zone to be called0/25.103.22.12.in-addr.arpa.

I have unable to get Microsoft’s DNS server to use this naming convention.

Any ideas?

Thanks in advanced.