DomainKeys (informally DK) is a deprecated e-mail authentication system designed by Yahoo to verify the DNS domain of an e-mail sender and the message integrity.
Aspects of DomainKeys, along with parts of Identified Internet Mail, were combined to create DomainKeys Identified Mail (DKIM), which is now widely used.
Both DomainKeys and DKIM were published in May 2007, DomainKeys as an "historical" protocol, and DKIM as its standards-track replacement.
See also
- Sender ID
- Author Domain Signing Practices
- Sender Policy Framework (SPF)
References
External links
- DKIM.org (DKIM resources website: implementations, FAQ, news).
- IETF DKIM working group (started 2006).
- Yahoo!'s description of DomainKeys (historical; archived from the original on 2007-10-18).
- Yahoo!'s statement about IPR claimed in DKIM draft
- DomainKey Library and Implementor's Tools (Yahoo!'s historical free software reference implementation of DomainKeys).
- U.S. Patent 6,986,049
- SpamCop FAQ: Why are auto responders bad? (FAQ entry about bogus bounces, also discusses DomainKeys).
