Outlook.com Is Quietly Rejecting Email from Domains Without DMARC

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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