wayne writes "In a show of just how much Microsoft wants to put an end to email forgery, Hotmail, MSN and Microsoft.com will start enforcing Sender ID checks by Oct 1. In late May, MicroSoft announced that they would be adopting the Open Source SPF anti-forgery system (with a slight modification to make it Sender ID) and they have been working together with the IETF MARID working group to help create an RFC to define the Sender ID standard. Already tens of thousands of domain owners, such as AOL, Earthlink, and Gmail, have published SPF records, and thousands of systems are already checking SPF records. Publishing SPF records is easy, as is checking SPF records."
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