This would appear to be a Dmarcian question rather than a DMARC one as the Threat/Unknown is a Dmarcian classification rather than a DMARC one. More broadly, a/some receiver(s) and/or Dmarcian would appear to have decided at about the time that you made your change to reclassify a bunch of mail as forwarded. It is possible that this happened in response to your change, but I'd suggest rather unlikely.
If a receiver has decided to treat a particular message/stream as being from a trusted forwarder (i.e. to ignore the domain registrant's policy) then there is probably very little that you as a domain registrant can do to address that. If your total message volume is sufficient to warrant it then you might consider talking to AMI and/or Return Path about access to failure reports from the receivers in question and/or website deactivation services like IID. (I have no current commercial relationship with any of the above.) - Roland [https://www.trustsphere.com/images/signatures/trustsphere.gif] Roland Turner Labs Director Mobile: +65 9670 0022 3 Phillip Street, #13-03 Royal Group Building, Singapore 048693 ________________________________ [https://www.trustsphere.com/images/signatures/facebook.gif]<https://www.facebook.com/trustSphereco> [https://www.trustsphere.com/images/signatures/twitter.gif] <https://twitter.com/trustsphere> [https://www.trustsphere.com/images/signatures/linkedin.gif] <https://www.linkedin.com/company/trustsphere> [https://www.trustsphere.com/images/signatures/youtube.gif] <https://www.youtube.com/user/trustsphere> www.trustsphere.com<http://www.trustsphere.com/> ________________________________ From: dmarc-discuss <[email protected]> on behalf of John Corey Miller via dmarc-discuss <[email protected]> Sent: Tuesday, 26 January 2016 23:36 To: [email protected] Subject: [dmarc-discuss] Increase in Forwarders Since Implementation of DMARC Reject Policy We have Google Apps for Business set-up with our domain name for our business. Since making the change to fully reject mail that fails dmarc, the number of messages counted as coming through "Forwarders" on our dmarc reports when run through this tool https://dmarcian.com/dmarc-xml/ has drastically increased. In many cases these new "Forwarders" are the same IPs that previously were coming through as "Threat/Unknown" (clearly fishers.) Does this mean that after seeing that google started rejecting their e-mails they changed something about how they're sending them to attempt to circumvent these rejections? If so, does any action have to be taken to prevent this circumvention?
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