Outlook.com Is Quietly Rejecting Email from Domains Without DMARC

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by kevincox on Monday November 09, 2026 @06:46AM (#50424283)

Lots of big email services do quietly reject mail. They successfully accept it but then throw it away (sometimes not even in the spam folder for particularly high span scores).

[ Parent | on HN ]

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by Aachen on Monday November 09, 2026 @10:12AM (#50426753)

That's their issue. Don't be a customer at such an email provider :shrug:

I had a legal dispute once where a shop didn't provide warranty on a product. They took the product in but then it was indefinitely in repair. Long story short, it ended up being helpful that I have email server logs that show every transaction, so that I could say "on date+time the email was delivered to IP address X, which was registered as the mail exchanger for your domain, and your server took the email with status code XYZ Queued <ID> For Delivery." I got the money back after that

Afaik that's not what Microsoft/Hotmail does though: since it rejects, you get a delivery failure notification

[ Parent | on HN ]

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by 6031769 on Tuesday November 10, 2026 @05:54AM (#50438535)

That's not a rejection then, it's a discard. Terminology matters.

[ Parent | on HN ]

Re:Outlook.com Is Quietly Rejecting Email from Domains Witho... by kevincox on Tuesday November 10, 2026 @06:08AM (#50438646)

Sure "silent rejection" == "discard"

[ Parent | on HN ]