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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 nine_k on Sunday November 08, 2026 @06:02PM (#50418493)
DMARC is not hard.

"Reputation scores" and blacklists / greylists started in late 1990s / early 2000s as multiple grassroots efforts when spam started to overwhelm systems. Gmail did not exist, outlook.com did not exist, it was easy and expected to run your own SMTP (which I did). And it was very unpleasant.

DMARC appeared 10 if not 15 years ago. There's no reason for a sane MTA configuration not to have it.

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by jonathanlydall on Monday November 09, 2026 @12:00AM (#50421257)
Outlook.com is a rebranding of Hotmail.com which absolutely did exist in the 90’s.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by nine_k on Monday November 09, 2026 @02:00AM (#50422047)
Indeed, Hotmail was sold to MS in 1997, which I incorrectly remembered to have happened past 2000.
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