DomainKeys (informally ''DK'') is a deprecated
e-mail authentication Email authentication, or validation, is a collection of techniques aimed at providing verifiable information about the origin of email messages by validating the domain ownership of any message transfer agents (MTA) who participated in transferring ...
system designed by
Yahoo
Yahoo! (, styled yahoo''!'' in its logo) is an American web services provider. It is headquartered in Sunnyvale, California and operated by the namesake company Yahoo Inc., which is 90% owned by investment funds managed by Apollo Global Manage ...
to verify the
domain name
A domain name is a string that identifies a realm of administrative autonomy, authority or control within the Internet. Domain names are often used to identify services provided through the Internet, such as websites, email services and more. As ...
of an
e-mail
Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. Email was thus conceived as the electronic (digital) version of, or counterpart to, mail, at a time when "mail" meant ...
sender and the
message integrity
Information security, sometimes shortened to InfoSec, is the practice of protecting information by mitigating information risks. It is part of information risk management. It typically involves preventing or reducing the probability of unauthorize ...
.
Aspects of DomainKeys, along with parts of Identified Internet Mail, were combined to create
DomainKeys Identified Mail
DomainKeys Identified Mail (DKIM) is an email authentication method designed to detect forged sender addresses in email (email spoofing), a technique often used in phishing and email spam.
DKIM allows the receiver to check that an email claime ...
(DKIM),
[Delany, Mark (May 22, 2007)]
"One small step for email, one giant leap for Internet safety"
Yahoo! corporate blog. Delany is credited as Chief Architect, inventor of DomainKeys. 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
Sender ID is an historic anti- spoofing proposal from the former MARID IETF working group that tried to join Sender Policy Framework (SPF) and Caller ID. Sender ID is defined primarily in Experimental RFC 4406, but there are additional parts in RF ...
*
Author Domain Signing Practices
In computing, Author Domain Signing Practices (ADSP)
is an optional extension to the DKIM E-mail authentication
scheme, whereby a domain can publish the signing practices it adopts when relaying mail on behalf of associated authors.
ADSP was adop ...
*
Sender Policy Framework
Sender Policy Framework (SPF) is an email authentication method designed to detect forging sender addresses during the delivery of the email. SPF alone, though, is limited to detecting a forged sender claim in the envelope of the email, which is ...
(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 fro
the originalon 2007-10-18).
Yahoo!'s statement about IPR claimed in DKIM draftDomainKey Library and Implementor's Tools(Yahoo!'s historical free software reference implementation of DomainKeys).
* {{US patent, 6986049
(FAQ entry about bogus bounces, also discusses DomainKeys).
Email authentication
Cryptographic protocols
Spam filtering
Yahoo! Mail