From Wikipedia, the free encyclopedia
(Redirected from Domain key signatures)

DomainKeys (informally DK) is a deprecated e-mail authentication system designed by Yahoo[1][2] to verify the domain name 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),[2][3][4] which is now widely used.[5]

Both DomainKeys and DKIM were published in May 2007, DomainKeys as a "historical" protocol, and DKIM as its standards-track replacement.

See also[edit]


  1. ^ ""May 19, 2004 Yahoo Releases Specs for DomainKeys"". Archived from the original on March 8, 2016. Retrieved August 8, 2015.
  2. ^ a b Delany, Mark (May 22, 2007). "One small step for email, one giant leap for Internet safety" Archived 2013-03-14 at the Wayback Machine. Yahoo! corporate blog. Delany is credited as Chief Architect, inventor of DomainKeys.
  3. ^ RFC 4870 ("Domain-Based Email Authentication Using Public Keys Advertised in the DNS (DomainKeys)"; obsoleted by RFC 4871).
  4. ^ RFC 6376 ("DomainKeys Identified Mail (DKIM) Signatures"; obsoletes RFC 4871 and RFC 5672).
  5. ^ Jim Fenton (15 June 2009). "DomainKeys Identified Mail (DKIM) Grows Significantly". Cisco. Archived from the original on 24 December 2014. Retrieved 28 October 2014.

External links[edit]