Hotmail now has Sender ID
In its tradition of dog food consumption, Microsoft deployed Sender ID authentication in Hotmail, to protect e-mail users from malicious spam and scams. The tests started a few months ago, so this announcement was expected.
Sender ID will arrive to Exchange 2003 with the release of SP2, but meanwhile there are some 3rd-party products that already implement this technology in Exchange, such as GFI MailEssentials and SPF event sink.
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