LDAP authentication and shadowExpire

Hi,

I am trying to configure Dovecot (2.2.27) with LDAP passdb,
specifically with authentication binds
(https://wiki.dovecot.org/AuthDatabase/LDAP/AuthBinds).

Atribute shadowExpire has a unix time stamp value. Is there a way to
write pass_filter like shadowExpire

Or maybe there is better way to implement password expiration in Dovecot?

-- Pagarbiai Mantas Gegužis VU Informacinių technologijų taikymo centras