Hello
Can you tell me this sender's sending domain ? For example, @business.com?
Outlook online - emails from a specific sender are not being delivered
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Pam Swortzel
0
Reputation points
One specific sender is not being delivered. I have no blocking rule in place. The issue is the same online and mobile. This is a server issue. It makes no sense to set up a separate account just to received emails from one sender.
I need a realistic solution to this issue from Outlook help.
Outlook | Web | Outlook.com | Email
1 answer
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EmilyS726 222.1K Reputation points Independent Advisor2026-03-13T21:50:49.8266667+00:00 -
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EmilyS726 222.1K Reputation points Independent Advisor
2026-03-13T22:01:37.5933333+00:00 Thank you. The issue is not on your end, or Microsoft's.
The example domain you provided is missing DKIM dns record. Hence they are rejected by Microsoft. Please let their support or site owner know, once corrected, their emails can be accepted typically within 24 -48 hours. See Microsoft's announcement about SPF/DMARC/DKIM requirements here (you can share this article with them, but typically IT handling domain/email should know what all these mean). https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/strengthening-email-ecosystem-outlook%E2%80%99s-new-requirements-for-high%E2%80%90volume-senders/4399730
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