Overview
SPF, DKIM, and DMARC are email authentication methods that help protect your domain and improve the odds that your messages are delivered correctly. They are especially important for business email.
Plain Language Explanation
- SPF says which mail servers are allowed to send from your domain
- DKIM adds a signature to confirm a message has not been altered
- DMARC tells receiving servers what to do if checks fail
Why This Matters
- Reduces spoofing and fake use of your domain
- Improves deliverability for legitimate mail
- Helps diagnose mail flow problems more clearly
Where These Are Managed
These settings live in DNS. If your domain uses Cloudflare, edit them there. If your domain uses your hosting nameservers, edit them in the hosting DNS tools.
If you are setting up professional email for your business, you may also want to read our business hosting and email resources.
