Wrong Dialins

Hello With our old Redback we have been able to see Authentication failures in den the Freeradius Detail file. At the Moment this is not logged any more in the Details file. But I don't know why. We changed the Redback some time ago. The new one uses the same config file like the old one. Is this an Option in the Freeraius config for logging Authentication failures? And is it possible to log the Passwords the users entered?. Thanks Dominik Sennfelder