On 05/06/2014 12:41 PM, Shal Farley wrote:

The irony, if there is one, is that Yahoo Groups wasn't prepared for DMARC even though Yahoo Mail led the way down this particular garden path. That has a certain, let's be polite and call it "cognitive dissonance", with Yahoo's public statements in support of their switch to p=reject


Perhaps. I suspect that a simpler explanation might be that mailing lists just aren't that important a part of email. Most of the people discussing this on mailing lists are naturally likely to have an inflated perception of the importance of mailing lists to email as a whole.

I don't yet have a way to measure this either way, other than to point out that it's rather improbable that Yahoo! ignored the aggregate and failure reports that they were already receiving prior to making the switch, meaning that it is likely that they were able to measure the impact on their users as a whole (vs. on the minority who are self-selected list users) as relatively small.

- Roland

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  Roland Turner | Director, Labs
  TrustSphere Pte Ltd | 3 Phillip Street #13-03, Singapore 048693
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