OpenFire and SME LDAP Groups

I have installed OpenFire according without any issues. I’m using LDAP authentification as described on

The problem I was facing is empty groups, or groups without members, and my SME groups for sure have members. I have tried several options of the ldap.groupSearchFilter and ldap.groupMemberField without luck.

Any idea how to get my SME groups populated with members within the OpenFire Groups?