Thank you very much,
setting tokengroups to false solved all my problems, these are the configuration line
added which solved my problems.
ldap_use_tokengroups=false
ldap_user_name = sAMAccountName
ldap_user_home_directory = unixHomeDirectory
ldap_user_member_of=msSFU30PosixMemberOf
ldap_group_member=msSFU30PosixMember
ldap_group_gid_number=gidNumber
ldap_user_uid_number=uidNumber
Thank you again!