In article 45502A0A.4010609@otaku42.de, Michael Renzmann mrenzmann@otaku42.de writes
That makes me wonder: a.) Is there a SURBL (outside of surbl.org) available already specially for website spam?
bsb.spamlookup.net, although the closest thing to documentation for it is http://bradchoate.com/projects/spamlookup
Else there's always http://akismet.com/ which I believe uses a private blacklist amongst other things.
Kevin