Microsoft announced today it’s putting its SenderID technology under its Open Specification Promise program. This allows anyone to create products or services using SenderID technology. SenderID lets (receiving) mail servers determine whether a sending mail host is authorized to send email for a particular domain, based on SPF records published in the sending domain’s DNS.
SenderID has been around for 2 years, and is used by about 5 million domains according to Microsoft. It is a good anti-phishing defense, and also another component in a multi-layered approach to fighting spam.
CNET has more.
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