Nigel Frankcom wrote: >Admittedly not much, > >My biggest issue was yahoo sporting anti spam options in a spam mail. > >
My biggest issue would be the assumption that domainkeys is an anti-spam option. It's not. Period. No matter what some people at slashdot might think, it is NOT an anti-spam technique. Domainkeys, like SPF, is an anti forgery technology. Nothing more. Anyone who tells you otherwise is overstating it's benefits or does not understand the technology. While anti-forgery techniques are slightly helpful to the anti-spam community in tracking down the actual source of a message, they do not in any way prevent someone from sending spam that is not forged. Really all this buys you is discouraging forgery by making it easy to detect. This has the side effect that when spam isn't forged, it's easier to get the originating accounts terminated. That's all it offers in terms of anti-spam efforts. It's not really much, but it's a lot better than looking at the RDNS names in the Received: headers to try to "verify" what domain a mail really came from. (Sorry for the soap box, but this particular misconception is particularly common, and one that needs to be eliminated from further propagation.)
