Email & deliverabilityPractical guide · updated for 2026
How to Set Up SPF, DKIM, and DMARC
Add these email-authentication records in your domain’s DNS settings, using values from your email provider. Start with SPF and DKIM, then introduce DMARC in monitoring mode before considering a stricter policy.
Have this ready
- Access to your DNS host
- The sending services and their setup instructions
- An inbox for DMARC reports
Step by step
- 1List every service that sends email using your domain, such as your mailbox provider and newsletter platform.
- 2In each service’s setup guide, find the SPF and DKIM DNS records it requires.
- 3At your DNS host, add or update the SPF TXT record. Keep one SPF record for the domain and include all legitimate senders.
- 4Add each DKIM record exactly as provided, including its host name and value.
- 5Add a DMARC TXT record at _dmarc, starting with a monitoring policy such as p=none and an email address for reports.
- 6Allow time for DNS changes to propagate, then check authentication results and review DMARC reports before tightening policy.
Want it done with you?
I can walk you through it in a live private browser, show you the exact clicks, or do it with you and keep the recording. You log in yourself; I never see your password.
Common questions
Can I publish more than one SPF record?+
Usually no. Combine authorized senders into one SPF record, following your providers’ instructions.