Blog on Reliable Email Delivery
Practical guides and explanations for anyone who needs their emails delivered reliably and trusted — and wants their recipients to easily spot and discard fraudulent messages sent in their name. Step-by-step SPF, DKIM, and DMARC setup, and how SPFmonitor can help.
SPF, DKIM, and DMARC — Complete Email Authentication Guide
SPF, DKIM, and DMARC form three layers of email authentication. Learn how they work together, the correct deployment order, and common mistakes to…
Spoofing and Phishing — Defending with Email Authentication
Email spoofing and phishing threaten every domain without authentication. Learn how SPF, DKIM, and DMARC protect your domain — and what they can't…
What is DKIM and How Does It Work
DKIM verifies email integrity and origin using digital signatures. Learn how it works, how to set it up, and why it's essential for DMARC and…
What Is DMARC and How Does It Work
DMARC ties SPF and DKIM together and adds a policy for unauthenticated emails. Learn how it works, how to deploy it, and why Google and Yahoo require…
What Is an SPF Record and Why Do You Need One
An SPF record protects your domain from being used to send fraudulent emails. Learn how SPF works, how to set it up, and why it's essential for…
Why Emails Go to Spam and How to Fix It
Missing SPF, DKIM, or DMARC is the most common reason legitimate emails land in spam. Learn what mail servers check and how to fix your setup.