LDAP group mapping

Hello,

I'm setting up an Openfire server, and I can't get the group mapping to work with our openldap.

I somebody would be so kind to help me, here's a example of the structure :

dc=xxx,dc=fr

- ou=groups

-- cn=system

--- gidNumber=5001

--- description=what does IT mean ?

--- memberUid=it1

--- memberUid=it2

-ou=people

-- cn it1

-- gidNumber=100 (default user group)

-- uid=it1

-- uidNumber=456

-- cn it2

-- gidNumber=100 (default user group)

-- uid=it2

-- uidNumber=457

I've tried numerous things, it keeps slipping through my fingers

Cheers,

Pierre