The RA SPP Plugin collection provides several
plugins meant to be used with a qmail patched
using qmail-spp (http://qmail-spp.sf.net). These
plugins cover diverse areas, and are meant to give
you good performance, good logging, and security.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.