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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 figassis on Monday November 09, 2026 @11:13AM (#50427551)
Just had a non tech friend reach out to me because they’re unable login to Claude. Sure enough, Anthropic (MAIL.ANTHROPIC.COM) does not seem to have their DMARC properly setup: https://mxtoolbox.com/SuperTool.aspx?action=Txt%3aMAIL.ANTHR...
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by archon810 on Monday November 09, 2026 @06:58PM (#50434169)
Was this fixed? Because if I select the DMARC test on that page, it seems to pass.
[ Parent | on HN ]