library and milter for DMARC
OpenDMARC is a free open source software implementation of the DMARC specification. The OpenDMARC project is a community effort to develop and maintain an open source package for providing DMARC report generation and policy enforcement services. It includes a library for handling DMARC record parsing, a database schema and tools for aggregating and processing transaction history to produce DMARC reports, and a filter that ties it all together with an MTA using the milter protocol.
Homepage: http://www.trusteddomain.org/opendmarc/
Maintainer: Renaud Allard <renaud@allard.it>