We have installed IDMU component on domain controller Windows server 2012R2. and configured the nis client on RHEL5.5 machine. After adding the Unix attributes for a user a default encryption was set for the user attribute. The user changes his password on their workstation and the password replicates to NIS client and the user will able to login to unix machine. But when user changes his password for the second time the new encrypted password doesn't get updated, instead the user is able to login to the unix machine with the old password.
Any helpful information on this would be most appreciated.