Environment
Open Enterprise Server 11 SP1
Domain Services for Windows
DSfW
Domain Services for Windows
DSfW
OES11.1
Situation
Mac 10.8 fails to join a DSfW domain
Mac 10.7.x is able to join a DSfW domain
Resolution
Macs are not supported with DSfW at this time.
OES 11 SP2 is scheduled to support Mac 10.8 (not earlier versions)
Starting in OES11 SP2 DSfW will support both UDP and TCP along with Mac 10.8 joining a DSfW domain.
Cause
Apple has changed the protocol used to query the directory from UDP to TCP. The standard is UDP and DSfW supports UDP as of OES11.1