Top Deliverability’s Blog
DMARCIAN: Microsoft Honors DMARC Enforcement Policies
- July 19, 2023
- Posted by: Top Deliverability
- Category: DMARC DMARCIAN Email Authentication Email Services Industry News
DMARCIAN just published a insightful blog:
Here’s some long-time-coming news from Microsoft, one of the world’s largest mailbox providers: they have started rolling out changes to honor DMARC policies as published in a domain’s DNS. Microsoft will now be treating the p=reject policy as intended; email failing DMARC authentication will not be delivered. Microsoft had been treating the DMARC policies of p=quarantine and p=reject the same way; email failing DMARC with a p=reject policy was delivered to the spam folder. Microsoft said they had operated this way “because some legitimate email may fail DMARC. For example, a message might fail DMARC if it’s sent to a mailing list that then relays the message to all list participants. If Microsoft 365 rejected these messages, people could lose legitimate email and have no way to retrieve it. Instead, these messages will still fail DMARC but they’ll be marked as spam and not rejected.” Microsoft signaled the change to
Read more here: Microsoft Honors DMARC Enforcement Policies
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