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2005/06/29 Domain keys

Some material is very old and may be incorrect today

© June 2005 Tony Lawrence

The idiots over at Microsoft are trying to shove their Sender Id down everyone's throat by refusing email that doesn't use it.. We can only hope that the combination of short notice and incredible arrogance will cause this ploy to backfire in their face. To borrow from the the drug use prevention world, let's "just say no". To hell with Microsoft and the people dumb enough to use their technology. Cut 'em off from the rest of the world, and if they can't get mail from us, too bad: that's their problem.

Yahoo, on the other hand, has offered a similar but more open system: http://antispam.yahoo.com/domainkeys. This works by using ssh keys from the DNS domain: if the email really came from the domain it says it does, it will have a header that matches with the public key of that server. Yes, initially a spammer can still send, but they'll be quickly and accurately identified, forcing them to setup new domains, which is annoying and at least mildly expensive. Sounds like a better idea to me.

See also Kerio Spam Control: Caller-ID and SPF

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Inexpensive and informative Apple related e-books:

Take Control of iCloud

Take Control of Parallels Desktop 12

El Capitan: A Take Control Crash Course

Take Control of Numbers

Take Control of Preview

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