Fix · Caddy
Fix “Email spoofing policy (DMARC)” on Caddy
Publish a DMARC record and move to p=quarantine, then p=reject: v=DMARC1; p=reject; rua=mailto:dmarc@yourdomain
No server-level snippet for this control on Caddy; apply the guidance below.
Verify the fix
Re-run the Email spoofing policy (DMARC) check after deploying. Test config changes in staging first and keep a rollback: a wrong header can break a site faster than a missing one.
Other stacks: nginx · Apache · Express / Node · Cloudflare