Yahoo and Cisco combine their antispam technologies

Yahoo and Cisco are collaborating on a new e-mail authentication technology to fight spam.

Yahoo and Cisco Systems are combining their antispam technologies to create a new e-mail authentication system, they announced this week.

The system, called DomainKeys Identified Mail (DKIM), will draw on Yahoo's DomainKeys authentication technology and Cisco's Internet Identified Mail. The technology will be offered to other industry players on a royalty-free basis in an effort to reduce the amount of spam spread across the Internet, the companies said.

E-mail authentication is important because spammers and online criminals often used forged e-mail addresses to send unwanted messages.

Yahoo's DomainKeys uses public-key cryptography to authenticate the sender of an e-mail at the domain level. The sending system generates a signature and inserts it in the e-mail header while the receiving system verifies the signature using a public key published in the Domain Name System.

Cisco's authentication technology also uses cryptography but associates the signature with the message itself. In its system, the sending server signs the message and inserts the signature and pubic key used to create it in a new and additional header. The receiving system then verifies that the public key used to sign the message is authorized for use by the sending e-mail address.

DomainKeys Identified Mail will combine aspects of both of these authentication systems. It will use the Domain Name System in the same manner as DomainKeys, to verify signatures using the published public key, but will also draw on Cisco's header signing technology to ensure consistency as messages are sent through the system.

It wasn't immediately clear how the new technology would fit in with the companies' prior work on authentication systems, however. Yahoo has already implemented DomainKeys into its Yahoo Mail service and offers the technology royalty-free to other industry players.

The Sunnyvale, California, Internet company said that it receives more than 350 million messages a day signed by DomainKeys, but did not say whether it plans to replace the technology once DKIM becomes available.

As for Cisco, it released an open source implementation of Identified Internet Mail late last year.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Scarlet Pruitt

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Christopher Low

Brother RJ-4230B

This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.

Aysha Strobbe

Microsoft Office 365/HP Spectre x360

Microsoft Office continues to make a student’s life that little bit easier by offering reliable, easy to use, time-saving functionality, while continuing to develop new features that further enhance what is already a formidable collection of applications

Michael Hargreaves

Microsoft Office 365/Dell XPS 15 2-in-1

I’d recommend a Dell XPS 15 2-in-1 and the new Windows 10 to anyone who needs to get serious work done (before you kick back on your couch with your favourite Netflix show.)

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?