OpenLDAP: pwdChangedTime attribute isn't created after changing the password?

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http://serverfault.com – I'm going to integrate the check_mk's Multisite with OpenLDAP. After configuring the LDAP connector, I get the following error when opening the "Users & Contacts" page: Error executing sync hook The "Authentication Expiration" attribute (pwdchangedtime) could not be fetchedfrom the LDAP server for user {u'cn': [u'noreply']}. Here're all the steps that I've done to implement the Password Policy Overlay: Install overlay modules for OpenLDAP server: yum install openldap-servers-overlays Add the following lines to /etc/openldap/slapd.conf: include /etc/openldap/schema/ppolicy.schem (HowTos)