SpamBlocker is the name of the exim.conf file available beginning May 15, 2004, and used in DirectAdmin by defualt shortly thereafter. This is the place to discuss SpamBlocker issues, problems, and features.
Spamblocker1 (the original SpamBlocker) should no longer be in use, but some people may still be using it. If so, this is your forum for discussing SpamBlocker1 issues.
SpamBlocker3, in beta as of December 26, 2006. If you're using it, or trying to decide whether or not you should use it, this is the place to discuss issues, errors and problems.