when i worked on this stuff at hotmail, standard procedure was to do a staged rollout over a longish period of time so that we could measure the impact to production servers and so on. what this looks like from the outside is dmarc being applied using a gradually increasing sample rate. messages sampled out look like p=none, the rest whatever your policy is.
hotmail has has private-channel dmarc for long enough time that the none/quarantine/reject semantics are fairly well understood. i don't know if any of my former colleagues are on this list, so i've forwarded the thread on to them to see if they have more to add. i don't know what's changed procedurally since i left. -p From: Franck Martin <[email protected]> Date: Thursday, November 29, 2012 12:08 AM To: Sam Patrick <[email protected]>, "[email protected]" <[email protected]> Subject: Re: [dmarc-discuss] Hotmail Email Rejection for DMARC senders > This is just guess work. I think hotmail is still ramping up/implementing, so > it may likely be they apply lower forms of the policy till they are confident > there is no serious bugs. > > From: Sam Patrick <[email protected]> > Reply-To: Sam Patrick <[email protected]> > Date: Wednesday, November 28, 2012 10:08 PM > To: "[email protected]" <[email protected]> > Subject: [dmarc-discuss] Hotmail Email Rejection for DMARC senders > > We have recently setup DMARC in our DNS and all the spam/ phishing emails > (fake emails using our brand name) are getting blocked in Gmail, Yahoo, AOL > etc but, these emails are still landing in the SPAM folder of Hotmail. > > Please let me know if Hotmail is following DMARC 'reject' rules and policies > while accepting emails. > > Regards, > ~~~~~~~~~~~~~~~~~~~~~~ > Sam Patrick > Domain Admin > > [email protected] > > 123Greetings.com, Inc. > 1674 Broadway, Suite 403 > New York, NY 10019 > > http://www.123greetings.com > ~~~~~~~~~~~~~~~~~~~~~ > _______________________________________________ dmarc-discuss mailing list > [email protected] http://www.dmarc.org/mailman/listinfo/dmarc-discuss > NOTE: Participating in this list means you agree to the DMARC Note Well terms > (http://www.dmarc.org/note_well.html)
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