Scott, it's almost certainly an undercount as there are domains which validate for DMARC but do not send reports.
Michael Hammer On Sat, Apr 13, 2019 at 5:12 PM Scott Kitterman <[email protected]> wrote: > A couple of days ago I sent a single message to a reasonably large mailing > list (spf-help, email oriented - so likely not representative, but it's a > data > point). Since I am a list owner, I know how many subscribers there are > and > from my DMARC feedback, I know how many times that single message got > reported. > > 43% of them showed up in my DMARC feedback, so that's at least one data > point > on breadth of coverage for DMARC feedback. > > To do this (at least the way I did it), you need to send a single message > in a > reporting period to an email list that does not re-write from and for > which > you know how many subscribers there are. > > I'm curious what kind of numbers other might be able to come up with. > > Scott K > > _______________________________________________ > dmarc mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dmarc >
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