Barricade
Barricade is an extension for ExpressionEngine 2.x that queries the http://stopforumspam.com database for each member registration. If a match is found for either the member email or both the username and IP address then that member is immediately moved into the Banned member group. It also logs this action into the CP log.
Checked for EE: 2.1.1 Download: barricade (Zipped)
Installation Instructions
Download the latest version and unzip the archive. Inside will be a folder called barricade. Just copy that folder into your system/expressionengine/third_party folder and then enable the Barricade extension.
Usage
This is no configuration required. You can leave it running and it will check every member registration. At the moment it does not send out email notifications – you can track its progress by viewing the CP log.

