MTA-HASHCASH

Project links

• Our draft, also available as xml.
• CVS repository.
• Mailinglist.
• IRC channel #mta-hashcash at freenode

Random links to related information

• Nice overview of mail flow, by Patrik Fältström, at IETF Seoul, February 2004.
• hashcash.org, another hash-cash proposal, acting at the MUA level.
• RFC 2821, the updated version of the classing SMTP specification RFC 821.
• RFC 2822, Internet Message Format specification.
• "Proof-of-work" Proves not to work, a paper by Ben Laurie and Richard Clayton, concluding that hash-cash or "proof-of-work" by itself cannot solve the spam problem.
• A microsoft document about "Email postmarks".
• Eradicating Spam Through a Hybrid Sender-Pays Model, paper by Ron E. Jager, proposing proof-of-work postage.
• hashcash mailing list, archive at gmane.org.
• IETF Anti-Spam Research Group mailing list, archive at gmane.org.