Outlook.com Is Quietly Rejecting Email from Domains Without DMARC

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by datfrojo on Sunday November 08, 2026 @04:16PM (#50417347)

This seems overly dismissive especially for individuals who send emails from custom domains at low volumes. DMARC has previously been seen to only be really needed for high-volume senders. The mail testing service linked still gives 10/10 for emails received without DMARC (but with SPF and DKIK). My email is setup via Fastmail and I followed all the recommendations they provided (which didn’t include DMARC)

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by Rygian on Monday November 09, 2026 @04:45AM (#50423327)

Imagine that I deploy a site in HTTP-only, without TLS, and then complain "hey, why are browsers claiming that my site is insecure and showing some red padlock shenanigan, scaring my users away? Am I supposed to go around the Internet, checking what each browser considers 'secure' or not?"

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by newsoftheday on Monday November 09, 2026 @04:30PM (#50432476)

I've had DMARC implemented on my low volume server since I learned about it 10 years ago, it's not that hard.

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