Microsoft has made its Sender ID Framework specification for e-mail authentication freely available under its Open Specification Promise programme.
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Sender ID is designed to counter spam, phishing scams and malware by preventing e-mail address spoofing, where spammers or fraudsters forge the address in the ‘To’ line of the e-mail.
Figures released by analyst MarkMonitor revealed that Sender ID use among Fortune 500 companies had tripled from 7% in July 2005 to 21% in April this year. About 32% of all e-mails sent are now Sender ID compliant.
Microsoft said its move to open up the specification was aimed at promoting interoperability.
Brian Arbogast, corporate vice-president of the Windows Live platform development group at Microsoft, said, “There have been lingering questions from some members of the development community about the licensing terms from Microsoft and how those terms may affect their ability to implement Sender ID.
“By putting Sender ID under the Open Specification Promise, our goal is to put those questions to rest and advance interoperable efforts for online safety worldwide.”