OpenDMARC is a free open source software implementation of the DMARC specification. You can browse the source code, download the latest released version, and access the bug and other issue trackers here.

This work is part of an initiative of The Trusted Domain Project has been sponsored by TrustSphere, Cloudmark, Sendmail, NLNet, American Greetings, Google, ReturnPath, and LinkedIn. Read more here.


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