I'm using bdb backend as a recommended one - have no ldbm modules here - in debian there is no ldbm support.ldbm being present or not being present has absolutely nothing to do with your issue.I mentioned that because of this post (and several others I found on the forums):
http://www.openldap.org/lists/openldap-software/200211/msg00457.html
where's explicitly stated that aliases are supported just under LDBM backend - so sorry for confusion - I'm newbie in this area.
That was true 5 or 6 years ago. Not since OpenLDAP 2.2 though.
-- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/