Usually, this library works fine for LANs. It is not possible to do domain logons though it is possible to log on a each server that requires it. There are also bugs, inevitably. Anything related to SMB in Samba mode is done in the Samba libraries, so refer to Samba in that case. The library cannot do domain logons.
Information concerning the mailing list is available here .
The old mailing list is no longer active. Check the web interface . If you want to participate, get a user account on SourceForge and ask us for a cvs access. And anyway not before Samba-3.0 is out. You can report a missing feature or a bug by sending a mail to the mailing list describing your problem.