The tarballs below contain snapshots of the code used to implement the system described in "Distributed Quota Enforcement for Spam Control", NSDI 2006. The system, including clients of the enforcer and the enforcer itself, is called DQE.
This code is distributed under the GNU Public License.
The code runs on Linux 2.6 and has been made to compile on recent versions of FreeBSD.
The tarballs are listed in the order most-recent-first.
To get the code running, please see this HOWTO.