How to Fix SPF, DKIM, and DMARC Problems

NitWings · Apr 29, 2026 · 1 min read

Start with alignment

SPF, DKIM, and DMARC problems usually come from missing records, bad includes, broken selectors, provider misalignment, or unauthorized sending paths.

dig TXT example.com
dig TXT selector._domainkey.example.com

Check the message headers

DNS records only tell part of the story. Real message headers show which identity passed, failed, or aligned.

Technical review

Need this checked against your own sending system?

Share the domain, headers, bounces, provider warning, logs, or infrastructure symptom and NitWings will identify the practical next step.

Schedule a Technical Review