Email errors

What an email authentication error or warning means, and how to fix it with your provider.

  • DMARC fail: what it means and how to fix it

    What dmarc=fail means, how to read it in the Authentication-Results header, and how to fix SPF and DKIM alignment for services and forwarded mail.

    Updated

  • DMARC policy not enabled

    What the DMARC policy not enabled warning means, whether p=none affects delivery, and the safe order to move to quarantine or reject.

    Updated

  • No DMARC record found

    Fix No DMARC record found: add the right DNS TXT record, check subdomain inheritance, and troubleshoot a record that still does not appear.

    Updated