[SURBL-Discuss] SpamAssassin Discussion LIst

Even thought I don't use SpamAssassin, from time to time, I desire to discuss and even contribute ideas related to developing or enhancing rules base filtering. Like SpamAssassin, the mail filter I use is capable of using Regular Expressions in a way that is similar to SpamAssassin. When I get the urge to post questions and suggestions, I keep thinking that the SURBL list is not the best targeted forum for this topic and I should probably join the SpamAssassin discussion group to discuss this topic. However, after searching, I now see that there is more than one list for SpamAssassin.

Therefore, does anyone know **which** SpamAssassin list I should join (and where to subscribe) if I'm interested in rules development?

Thanks,

Rob McEwen