Top Deliverability’s Blog
Spam Resource: Microsoft OLC will soon respect DMARC policy
- March 24, 2023
- Posted by: Top Deliverability
- Category: Industry News Spam Resource
Al Iverson just issued a new engaging blog on Spam Resource:
Microsoft OLC, aka “Microsoft Outlook Consumer,” aka what used to be called Hotmail, now called Outlook.com (which includes the domains hotmail.com, outlook.com, live.com, msn.com, and all the other Microsoft domains I’ve listed here), will soon respect DMARC policy on inbound mail, declining to accept unauthenticated mail from domains with a DMARC policy of “reject.” Yahoo and Gmail already reject this type of failed mail today.Current state: If an email message sent to Microsoft OLC domains failed DMARC and the DMARC domain had a policy of “reject,” Microsoft would not actually reject that email message. It would end up in the junk mail folder instead. (Even though the specification strongly suggests that this mail should be rejected.)Why this is sub-optimal: It overrode a domain owner’s publicly stated desire (via that DMARC record in DNS) to reject mail that failed DMARC checks. This meant that more bad mail was likely to get into
More here: Microsoft OLC will soon respect DMARC policy
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