How a spoofed email passed the SPF check and landed in my inbox
The Sender Policy Framework can’t help prevent spam and phishing if you allow billions of IP addresses to send as your domain. Twenty years ago, Paul Vixie published a Request for Comments on Repudiating MAIL FROM that helped spur the internet community to develop a new way of fighting spam with the Sender Policy Framework (SPF). The issue then, as now, … More How a spoofed email passed the SPF check and landed in my inbox