Integrating with Zimbra LDAP Database

Hi Friends.

I am integrating openfire with Zimbra and trying to pull the info from Zimbra LDAP. The information is properly being fetched however Group Sharing is not happening properly. Since its LDAP I understand the DB is read only; but is there any mechanism by which I can start Group sharing?

Also, I am not able to add any members in group created. In zimbra I have created Distribution list which has members in it, even that Group name is being fetched properly but member section is still blank

Please advise.