I'm getting the error "If you want to redirect a domain you

I'm getting the error "If you want to redirect a domain you will need to add a DNS "A" record pointing at the IP address of this server: 223.130.25.175" with Domain Mapping on WPMU.

I have wordpress MU hosted on cPanel hosting, the domain in question is hosted on the same server, definitely has an A record to 223.130.25.175 but mapping won't work. Not sure wheree to go fro here, first WPMU site so not sure what to look for.

Regards,
Gavin