Email Security Foundations #03: SPF deep dive – how it works and how to configure it
This post is part of the Email Security Foundations series on MSDigest.net. What SPF actually does SPF, Sender Policy Framework, is simply a way to publish a list in DNS of which servers are allowed to send email for your domain. When a receiving mail server gets a message claiming to be from yourdomain.com, it looks up your SPF record and checks whether the sending server is on that list. That’s it.That’s the whole idea. …