DomainKeys is the name of a procedure for the Sicherstellung of the authenticity of E-Mail senders, that from Yahoo! one developed and since at the end of of 2004 in testing is. It was conceived, in order to help during the containment of unwanted E-Mail such as Spam or Phishing.

The system is based on asymmetrical coding. The E-Mail is provided with a digital one signature, which the receiving can verify server on the basis the public key, which is available in the DNS of the domain. This fails, has the receiving Mail transfer agent (MTA) or the receiving application program the possibility of refusing or of segregating the E-Mail.

Core of the procedure is that the sending MTA provides each dispatched E-Mail with a PKI signature, which the receiving MTA can examine. That or the used public keys are published for this in the DNS entry of the sending domain - that is, the DNS functions as certification body. One by DomainKeys marked E-Mail offers thus the possibility of testing surely whether the domain contained in the E-Mail return address is correct and that the E-Mail on the way of the feed was not changed.

Yahoo! if the procedure let patent, it aims at however that it is recognized of the IETF as Internet standard. After the failure of the standardisation of of Microsoft transmitter ID good chances are granted to the DomainKeys procedure to be established beside the SPF procedure in the Internet.

Support

The DomainKeys procedure requires larger modifications at the Mailserver - appropriate adjustments exist at present for nearly all usual Mail transfer agent. At present the DomainKeys procedure is supported only by very few Providern, well-known larger Provider, which use Domainkeys, is Yahoo! and Gmail.

The problem with these and all other methods for Sicherstellung the sender authenticity is that it will need a long period, in order to spread such a system, since first the software must be adapted and this must be used then also still on the Mailservern.

Advancements

In July 2005 Yahoo! became from Cisco and a common draft with the title DomainKeys Identified Mail (DKIM) submitted with the IETF. This suggestion was supported now also by other sizes of the IT-industry, among them also with Microsoft and AOL, those than alternative solution the SPF suggested.

See also

Transmitter Policy Framework (SPF), DNS

Related links

• Description of the procedure with Yahoo
• DomainKey Implementor's Tools and LIBRARY for email of server & clients - open SOURCE reference implementation of the procedure
• IETF Working group too '' DomainKeys Identified Mail Signatures ''

Articles in category "DomainKeys"

We found here 4 articles.

Related Websites

We found here 4 related websites.

• ComputerWeekly.com - Yahoo airs antispam initiative - IT ...
  Yahoo's DomainKeys is designed to let receiving e-mail systems confirm that a ... To promote DomainKeys' wide adoption, Yahoo will license its source code ...


• DomainKey Library and Implementor's Tools
  The purpose of this project is to create a freely available library that can be easily adopted by most MTA and UA implementers to add DomainKeys ...


• DomainKeys - Wikipedia, the free encyclopedia
  DomainKeys is an e-mail authentication system designed to verify the DNS domain ... The DomainKeys specification has adopted aspects of Identified Internet ...


• Yahoo! Anti-Spam Resource Center - DomainKeys
  The Yahoo! Mail internet information center devoted to spam protection; it describes the anti-spam features offered by Yahoo! Mail, offers tips and tricks ...