Under the hood, OS X Server has a number of substantial changes; however, at first the Server app (Server 3) appears to have had very few changes. The changes in the Server app were far more substantial in the Mountain Lion version of OS X Server. All of the options from Mountain Lion are still there and using the new command line interface for managing the service, there are far more options than ever before. The DNS service in OS X Server, as with previous versions, is based on bind 9 (BIND 9.9.2-P2 to be exact). This is very much compatible with practically every DNS server in the world, including…