Outlook.com Is Quietly Rejecting Email from Domains Without DMARC

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by gushie on Sunday November 08, 2026 @03:27PM (#50416808)

It affected my google workspace account

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by saagarjha on Sunday November 08, 2026 @03:31PM (#50416852)

Do you know if it’ll affect my (personal) account? I run everything through a normal Gmail account and have forwarding for incoming email and an alias for outgoing stuff

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by mike_hearn on Sunday November 08, 2026 @03:54PM (#50417133)

It shouldn't affect you. DMARC policies apply to the authenticated domain, which is Gmail.

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by saagarjha on Tuesday November 10, 2026 @11:24AM (#50442555)

I did some poking around and I fixed SPF but as far as I can tell I will always fail DMARC and can’t do DKIM. Hopefully this is enough…

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by MrDOS on Monday November 09, 2026 @10:19AM (#50426846)

If you're using Gmail's “Send As” feature to use a different SMTP server for outgoing mail, then yes, you must have a proper DMARC TXT record configured on the domain you send from (even if it's just `v=DMARC1; p=none`).

However, it is worth mentioning that Gmail is fully dropping the ability to use a non-Gmail SMTP server as of January: https://support.google.com/mail/answer/22370.

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Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by saagarjha on Monday November 09, 2026 @07:14PM (#50434346)

I think I have a Gmail SMTP server? I’m running a personal Gmail but having it send as another domain

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