Hi Alfonso,
Name off my father 
Some more specific information about your configuration and the steps you’ve already taken could help narrow down the problem. For example how you’ve configured the password expiration policies, and any relevant log entries you’ve encountered would be useful.
You have an elder article which seem to be the closest to your problem, included a bug report with some interesting points about this topic
and another one which might help you to see how it looks like on each side.
you might check this a keep going from there?
kind regards
mario