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Yahoo Begins to Use DomainKeys

According to a CNET article, Yahoo will begin on Monday to sign all outgoing email with DomainKeys signatures:

Yahoo on Monday will begin attaching antispam technology to all of its outgoing e-mails, hoping that other providers will follow suit. Messages from its free e-mail service will include a “Domain Key,” a system that creates a digital signature for outgoing e-mail and then lets receivers verify that the message comes from where it claims. The technology tries to thwart spam “phishing” attacks where messages pretend to originate from a familiar address and then launch viruses or social engineering hacks when opened.

A quick check with my Yahoo account reveals a DK signature:

Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
s=s1024; d=yahoo.com;
b=Of+zvGE5KtBaCJoAibkTIN05XZB9//gePjpw7TkjMJs0v2/Of42HsFMwoPw2jYGDTVOv/L1OUOuulwObD4S6065WWxXyvCcF6afHz5z4TtsHiVxK/Nrmbpka3egjjSCosKyHreqhWVBHaeAvk9f88+N/UJGNEbPCAAe94yvSFyA= ;

No word on whether they will be checking incoming email as well.

Tags: dkim, domainkeys, email authentication, yahoo

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