[Samba] samba groupware integration

[Marcus Sobchak <lists at localguru.de>]

Hi,

I'd like to install a groupware server in our institute and looking for
a software, which connects samba and the groupware server, for example
for authentication (may be LDAP) and (more importent) to see the samba
shares (user and groups) in the groupware web-front-end. I've talked
this week to the open-xchange people at CeBit, and if I understud them
right, the samba integration is not opensource. Any other ideas or
experiences?

Thanks,
Marcus