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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 codethief on Sunday November 08, 2026 @05:45PM (#50418296)
Outlook.com has quietly dropped[0] emails from certain domains/IPs for years, even with SPF/DKIM/DMARC all properly set up and no history of spam. As someone who's administering their own mail server, Outlook has been the bane of my existence.

[0]: As in: They accepted the email just fine (according to the logs) but it still didn't end up in the recipient's mailbox.

[ Parent | on HN ]
Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by _n_b_ on Monday November 09, 2026 @05:49AM (#50423847)
I went through this and ended up following these instructions (clearly AI-generated so strip through the verbosity) to get delivery restored: https://www.suped.com/learn/blocklists/how-can-i-resolve-mic...
[ Parent | on HN ]
Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by Steve16384 on Monday November 09, 2026 @08:25AM (#50425289)
It's probably just another bug in their software.
[ Parent | on HN ]