Hi All I try configure slapd.conf to support proxy authorization but I can not add authzTo attribute to an entry [root@masterldap ~]# ldapmodify -x -w secret -D "cn=admin,dc=demo,dc=net" dn: uid=matt,ou=Users,dc=demo,dc=net changetype: add authzTo: dn.regex=^uid=[^,]*,ou=Users,dc=demo,dc=net$ adding new entry "uid=matt,ou=Users,dc=demo,dc=net" ldap_add: Invalid syntax (21) additional info: authzTo: value #0 invalid per syntax [root@masterldap ~]# I didn't see an authzTo attribute in any openldap schema .How can I fix an error?