All sources and a lot of documentation are available online at the RSBAC homepage at http://www.rsbac.org.
There is also an RSBAC mailing list for discussion, bug reports and update notes.
Postings to the mailing list go to rsbac@rsbac.org,
requests go to majordomo@rsbac.org. A Web
interface with archive is available at http://www.compuniverse.de/lwgate/rsbac.