How to set up SPF, DKIM, and DMARC for your sending domain
This guide explains the importance of implementing SPF, DKIM, and DMARC protocols to ensure email deliverability and security. It provides a technical overview of how these DNS records work together to authenticate senders and prevent spam.
Why it matters
Proper email authentication is essential for businesses to ensure critical communications reach recipients and to protect their domain reputation.
It's way too common to overlook email authentication when you set up automated email. You connect your email provider, send a test message, and it lands in spam. Or Gmail bounces it with a 550 5.7.26 error about an unauthenticated sender. This guide explains how a sending domain is authenticated, which helps keep your messages out of spam.
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in