How to configure AD Authentication for RCM.
Set the following properties through the RCM portal under Administration=> Settings => System Properties:
If the username/password is not correct, a misleading error message will be displayed:
(This had been encountered in v12.5 SP2, it might have been fixed in newer versions).
Errors related to wrong username/password will NOT be logged into the server log file, however, if the RCM server can't access the AD, then an error message will be logged in the log file.