I have several clients who have Airport Extremes and Macs at their houses. They all have dynamic IP address from their ISP. I want to have their Airport Extremes register their IP addresses with my server, which has a static IP. Does anyone have a guide to set this up?
For example, if my domain is xyzdomain.com I'd like to register clientA.xyzdomain.com on my server.
I realize I need to host my own dynamic IP server, but I'm not having much luck finding instructions for OS X server (10.8).