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Re: [ietf-822] WSJ/gmail/ML, was a permission to...

Arnt Gulbrandsen <arnt@gulbrandsen.priv.no> Sun, 04 May 2014 16:03 UTC

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From: Arnt Gulbrandsen <arnt@gulbrandsen.priv.no>
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Date: Sun, 04 May 2014 18:03:08 +0200
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Subject: Re: [ietf-822] WSJ/gmail/ML, was a permission to...
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On Sunday, May 4, 2014 5:29:49 PM CEST, Dave Crocker wrote:
> A spammer wishing to use a domain name covered by dmarc would merely
> need to include a List-ID header field, to disable dmarc processing by a
> receiver...

Yes.

If you do dmarc processing for ma message with list-id, you get ~100% false 
positives. If you skip it, ~100% false negatives. Pick your poison. I have 
my opinion as to which poison is better in this case.

Arnt

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