Understanding SPF Records: A Primer The Sender Policy Framework (SPF) is a foundational component of email authentication, designed to combat email spoofing and enhance email security. By defining an SPF record—stored as a DNS TXT record within a domain’s DNS zone—administrators specify which mail servers are authorized to send emails on behalf of their domain….
Over time, entries in an SPF record start piling up as new SaaS tools get added, old services get abandoned without clearing up, and then suddenly you are dealing with an SPF record that looks like a messy list. Things get worse when you add in duplicate entries, bloated ‘include’ chains, or a stray syntax…
Understanding SPF Records: An Overview The Sender Policy Framework (SPF) is an essential component in modern email authentication, designed to combat email spoofing by allowing domain owners to specify which mail servers are authorized to send emails on their behalf. An SPF record is typically published as a DNS TXT record, embedded within the domain’s…
Understanding SPF: What It Is and How It Works Sender Policy Framework (SPF) is a critical component of modern email authentication designed to combat domain spoofing and reduce phishing attacks. At its core, SPF helps receiving mail transfer agents (MTAs) verify that incoming emails claiming to be from a certain domain are authorized to do…
Email channels were never considered a safe means of communication, and with the growing sophistication of artificial intelligence and machine learning, they’re being exploited even more. That’s the reason why a staggering 93% of organizations are now planning to strengthen their email security, driven by the rising threat of AI-powered phishing attacks. This is in…
Understanding the Basics of SPF Records The Sender Policy Framework (SPF) is a critical component of modern email authentication that helps prevent email spoofing, a common vector for phishing and spam attacks. An SPF record is a specially formatted DNS TXT record that specifies the mail servers authorized to send email on behalf of a…
La Poste, one of France’s top email service providers, has just raised the bar for email security. Starting September 2025, all emails sent to Laposte.net addresses must fully pass SPF, DKIM, and DMARC checks. This is not just a recommendation or a gentle nudge. It is now a strict rule without any exceptions. Whether it…
Understanding SPF (Sender Policy Framework) Fundamentals The Sender Policy Framework (SPF) is a critical component in the suite of email authentication protocols designed to combat email spoofing and improve email deliverability. SPF enables domain owners to specify which IP addresses or mail servers are authorized to send emails on their behalf, thus helping to prevent…
From the outside, email delivery might seem pretty straightforward—simply type, send, and done! But what goes on behind the scenes is totally different. We’re not saying that typing and sending aren’t part of the game, but a much more important aspect is to ensure that your email actually reaches its destination, and when it does,…
Understanding SPF: What Is Sender Policy Framework? The Sender Policy Framework (SPF) is a critical email authentication protocol designed to prevent email spoofing and protect against phishing attacks. Introduced to address the pervasive issue of forged senders and unauthorized mail transfer agents (MTAs), SPF enables the receiving email server to verify whether a particular email…
