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By Kevin Murphy
Yahoo! Inc has published the specification for its DomainKeys email sender authentication system and has submitted it to the Internet Engineering Task Force for possible ratification as an internet standard.
The firm is also working on a reference implementation of the spec, which will be released under a royalty-free license as a plug-in for mail transfer agent (MTA) software. Yahoo will shortly carry out interoperability trials.
DomainKeys is a way of authenticating email senders, using public and private key pairs and the domain name system, to give email-handling software better information with which to make spam filtering decisions.
The idea is that organizations create their own key pair and publish the public key in their DNS records. Outgoing email, including the headers, would be signed with the private key, and recipients would be able to verify the signature by looking up the public key.
In this way, email filters could make security decisions knowing with a high degree of certainty that the sender is who ...
Source: HighBeam Research, Yahoo Submits DomainKeys to IETF.(Internet Engineering Task Force)