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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 bigstrat2003 on Sunday November 08, 2026 @04:18PM (#50417390)
That may be so, but you can't control what mail service your recipients use. So whether or not it's a bad idea, it can be your problem. That said I don't agree with OP that self-hosting mail is a bad idea.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by nekusar on Sunday November 08, 2026 @05:37PM (#50418200)
Yes you can.

User signs up, uses @outlook. Your app declines it and explains that they block with no way to remedy, and explain they are a bad vendor.

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by Scharkenberg on Sunday November 08, 2026 @06:18PM (#50418706)
Deeply unserious take.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by nekusar on Sunday November 08, 2026 @07:46PM (#50419509)
As unserious as you claim, we had this exact problem.

Emails would be accepted by Outlook.com, but would never deliver. We had SPF/DKIM/DMARC and full reporting. They RBL'ed us with no remedy.

We told the customer to not use outlook.com BECAUSE we told them we could not guarantee any delivery of messages.

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by cowlevel on Monday November 09, 2026 @12:27AM (#50421417)
Seems to work for many websites. But only if your users aren't giving you money, because it's 50/50 whether they'll use a different email address or give up entirely.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by ethin on Sunday November 08, 2026 @10:59PM (#50420916)
Lol if you do that, your service is just going to have a small minority of people and most people will just not bother using your app/service entirely
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by cowlevel on Monday November 09, 2026 @12:29AM (#50421423)
Most people aren't using Outlook. If your users mostly are, then this solution doesn't work for you. But it does work for many people.
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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by nbernard on Tuesday November 10, 2026 @10:30AM (#50441785)
Sure, and the same is true from the recipient point of view: If you miss important emails because you are using a MS hosted server, it becomes your problem.
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