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A comment on Outlook.com Is Quietly Rejecting Email from Domains Without DMARC.

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by daneel_w on Sunday November 08, 2026 @02:53PM (#50416511)
It's possibly yet another issue relating to the long streak of problems seen the recent months by primarily self-hosters trying to reach people and businesses behind Outlook servers. The past few weeks a lot of my e-mail to friends and family using Hotmail have gone missing. Submits were OKd by Outlook servers, nothing bounced, e-mails just gone. My setup is clean, my network is clean.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by SoftTalker on Sunday November 08, 2026 @03:26PM (#50416790)
I'm fine with providers imposing some default level of spam protection but as a user I'd like the option to disable it, even better if I can disable it per domain or sender. The old technique of adding the sender to your contacts doesn't work reliably anymore.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by daneel_w on Sunday November 08, 2026 @03:38PM (#50416937)
An Outlook user first reaching out to you, and you replying and including the unique message-ID of their original envelope in your headers, doesn't affect anything either. Absurd. The whole situation is complete dog shit.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by pamcake on Sunday November 08, 2026 @04:36PM (#50417566)
"First time?"

It's not months it's years.

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by daneel_w on Sunday November 08, 2026 @05:37PM (#50418194)
Anecdotal. I've self-hosted for many years but didn't run into these issues with O365 until this year. But not surprised to hear it.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by cowlevel on Monday November 09, 2026 @12:56AM (#50421575)
They used to just drop all messages from domains not on their whitelist and to get whitelisted you needed to have a Microsoft account and open a support ticket.
[ Parent | on HN ]