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

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by waterTanuki on Monday November 09, 2026 @06:10PM (#50433683)
So free and open that open source email clients/servers are the most popular and widely used /s.

Protocols aren't proprietary by definition. It's a protocol. Anyone can implement it.

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