Fix SPF, DKIM, and DMARC Errors

The three DNS-based checks proving your emails really came from you.

What each one does, briefly

SPF — lists which servers can send on your domain's behalf. DKIM — a digital signature proving mail wasn't altered. DMARC — tells servers what to do on failure (monitor/quarantine/reject) and where to report.

Common errors and what they mean

"Domain failed DMARC authentication" — SPF/DKIM not aligning with your DMARC policy, often a From-address mismatch. Missing/misconfigured records. SPF lookup limit exceeded (max 10 DNS lookups).

How to fix it

1. Confirm you have a verified dedicated domain — shared domains don't let you control these records.
2. Add the generated SPF/DKIM/DMARC records exactly as given.
3. Click Verify Domain, confirm with MX Toolbox or Mail-Tester.
4. Make sure every From address matches your authenticated domain.

A sensible rollout order

Start DMARC in monitoring mode (p=none), tighten to quarantine then reject once confident. Expect propagation in a day or two, provider recognition in about a week, full stabilization in two to four weeks.