[Zope] Auto password expiry based on time

[Exteam]

Hi all,

I have been trying to find a way to make the password
to a zope site expire after a limited fixed time, 
unsuccesfully using python. 

I know I have to use acl_users but which file to
modify in zope (which is used to log in the user)is
the question. Also does this mean I have to recompile
zope?

Any help or direction would be highly appreciated.

Regards
Subhankar


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