Jonathan, This is a known issue with Microsoft: https://blogs.msdn.microsoft.com/tzink/2016/05/19/why-does-my-email-from-facebook-that-i-forward-from-my-outlook-com-account-get-rejected/
and https://blogs.msdn.microsoft.com/tzink/2017/06/22/an-update-on-the- forwarding-email-problem-in-office-365/ If their example applies to your message, it is probably because Kelly Elmstrom <[email protected]> <[email protected]> is being "fixed" to: "Kelly Elmstrom" <[email protected]> <[email protected]> and that breaks DKIM. You may want to try to change your marketing campaign to add the double quotes on the name and see whether that fixes the problem. Long shot... <https://blogs.msdn.microsoft.com/tzink/2017/06/22/an-update-on-the-forwarding-email-problem-in-office-365/> ARC (arc-spec.org) is also been specified exactly to overcome these scenarios. Google and AOL already implement it. p=reject is the only real form of protection not only for impersonation attacks but also to prevent mass spam senders from using your domain name (the latter is more common than you think). Best, Randal On 13 July 2017 at 17:49, John Levine via dmarc-discuss < [email protected]> wrote: > In article <[email protected]> you > write: > >Can we do anything to prevent messages such as this one from bouncing > >when we turn on p=reject? > > Probably not. > > Perhaps you could back up and tell us what problem you expect to solve > by turning on p=reject. Unless you are a target of an unusual amount > of phishing or malicious forgery, p=reject often causes more problems > than it solves. > > R's, > John > _______________________________________________ > 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) > -- Randal Pinto Founder & COO @randalpinto <https://twitter.com/randalpinto> Redsift Limited OnDMARC (https://ondmarc.com) - Block phishing attacks. Increase e-mail deliverability.
_______________________________________________ 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)
