Spam blocking tutorial
Spam blocking tutorial based on qpsmtpd & RBL lists
This is a link to an earlier Howto written for sme7.0 that is still applicable to sme7.x http://distro.ibiblio.org/pub/linux/distributions/smeserver/contribs/rmitchell/smeserver/howto/Spam%20blocking%20HOWTO%20using%20qpsmtpd%20&%20RBL%20for%20sme%20server.htm
There is good background information in the Howto regarding RBL lists, although some of the lists mentioned are now defunct. The link is posted here as a reference source for users of the sme server spam filtering panel.
I will revise the Howto & add it here when time permits.