News for hackers. Stuff that matters.

A comment on FastMail loses customers, faces calls to move over anti-encryption laws. Parent comment

Re:FastMail loses customers, faces calls to move over anti-e... by thaumasiotes on Monday February 25, 2019 @07:02AM (#19245008)
For shared IPs -- suppose I am microsoft.com and I send official email through your service. I set my SPF record to the IP address you give me, from which all my email gets sent.

If that IP is shared, what's stopping someone else from signing up with you and then sending email that purports to come from microsoft.com?

[ Parent | on HN ]

There are no comments on this comment yet.