Forum Discussion
self-to-self spoofing attack with honor DMARC policy turned on
Dear Community, I have a concern, I am an absolute fan of the ‘Honor DMARC record policy when the message is detected as spoof’ setting in the Anti-phishing policy. Especially the action ‘If the ...
vand3rlinden the other method is to disable non-deliverable reports in Exchange Admin Center > Mail Flow > Remote Domains
https://admin.exchange.microsoft.com/#/remotedomains
Thanks, that should work. However, this will block all de NDRs. I have opened a support case regarding this issue. Will come back to this post if there is a solution.