Most of the OpenLDAP overlays are now compiled as dynamic modules in our packages. If you want to use any of these in your setup make sure to put the correct "olcModuleLoad" or "moduleload" statements in your configuration. For details please see the slapd-config(5) and slapd.conf(5) manpages (depending on which config mechanism you use). For a list of the list of included dynamic modules see the "/usr/lib/openldap/modules/" directory. For convenience and backwards compatibility some overlays are are still compiled statically into the slapd binary. To see which overlays that are call "/usr/lib/openldap/slapd -VVV". Currently these are: syncprov (the provider part of syncrepl replication) ppolicy (a LDAP Password Policy implementation) Documentations for the overlays can be found in the respective man pages (named "slapo-") or the OpenLDAP Administration Guide which is part of the "openldap2-doc" package.