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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 0c3ca83 on Sunday November 08, 2026 @06:09PM (#50418583)
Right. And if you mandate dkim, as seems to be the case with servers that demand dmarc, what's the issue?

Or do you think it's critical to support mail that doesn't have dkim?

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by basilikum on Sunday November 08, 2026 @06:35PM (#50418894)
You'll have a bad time if you just drop all emails without DKIM. There are many large senders that do not care about well established email standards and you will drop important emails.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by 0c3ca83 on Sunday November 08, 2026 @07:15PM (#50419259)
These are the same senders that are correctly configuring dmarc?
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by basilikum on Monday November 09, 2026 @08:29AM (#50425334)
You said DMARC does not prevent email forgery. I simply corrected you on that and explained what DMARC does.

Setting a DMARC policy that allows unsigned emails is easier than configuring DMARC signing including key management. It's just adding a DNS record. Although large senders should of course do DKIM and it's not that hard either

But I'm not arguing with you about whatever Outlook did.

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