Remediation: ietf.org
Scan #610 · 11 Feb 2026, 22:35 UTC · Achievable posture: Low Risk
Provider Quick Guide
- Log in to dash.cloudflare.com and select your domain
- Go to DNS → Records
- Click Add Record
- Select the Type shown below (TXT, CNAME, MX, etc.)
- Paste the Name (host) and Content (value) from each card below
- Set Proxy status to DNS only (grey cloud) for email records
- Click Save
- Log in to dcc.godaddy.com
- Select your domain, then click DNS (or Manage DNS)
- Scroll to DNS Records and click Add New Record
- Select the Type shown below
- In Name, enter the host (use
@for the root domain) - In Value, paste the record value from the card below
- Click Save
- Log in to your DNS hosting provider's control panel
- Navigate to DNS Management or Zone Editor
- Add a new record with the type, host, and value shown in each card below
- For the host field, use
@if your provider requires it for the root domain - Save and allow up to 24–48 hours for propagation (usually much faster)
DNS Records to Add or Update
Change your DMARC policy from p=none to p=quarantine (then p=reject). Review your DMARC aggregate reports first to ensure legitimate senders pass authentication.
Publish an MTA-STS DNS record and host a policy file at https://mta-sts.ietf.org/.well-known/mta-sts.txt. This tells senders to require TLS when delivering mail to your domain.
Publish CAA DNS records to restrict which Certificate Authorities can issue TLS certificates for your domain. Specify your preferred CA (e.g., letsencrypt.org, digicert.com). CAA is advisory — CAs must check it before issuing, but absence means any CA can issue.
Your domain has DNSSEC + DANE — the strongest email transport security available. TLS-RPT adds operational visibility by reporting when sending servers fail DANE validation or encounter STARTTLS issues delivering to your MX hosts. It does not add security — it monitors the security you already have.
Done making changes?
After updating your DNS records, run a new scan to verify everything is correct. DNS changes typically propagate within minutes, but can take up to 48 hours.
Re-Scan ietf.org