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On Aug 25, 2005, at 2:08 PM, Bill Sommerfeld wrote:
In this case, the two experiments interpret the same codepoints in the DNS in subtly different ways.
A mail-sending domain indicates that it is participating by publishing certain DNS RR's. Crucially, a mail-sending domain cannot opt in to the SPF experiment without also opting in to the senderid experiment. This renders any claimed results of either experiment suspect.
-andy
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