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Executive's DNS Intelligence Brief

Board-level domain security assessment — tuta.io

21 Feb 2026, 15:21 UTC · 24.0s · SHA-3-512: 945b✱✱✱✱ Verify
DNS Security & Trust Posture
Risk Level: Low Risk
8 protocols configured, 1 not configured
2 recommendations
Email Spoofing
Protected
Brand Impersonation
Not Set Up
DNS Tampering
Protected
Certificate Control
Configured
What Requires Attention
Recommended Upgrade DMARC policy from quarantine to reject (p=reject) for maximum spoofing protection
Recommended Add DMARC aggregate reporting (rua) for visibility into email authentication
The BIG Questions
Can this domain be impersonated by email? Unlikely SPF and DMARC quarantine policy enforced
Can DNS itself be tampered with? No DNSSEC signed and validated, cryptographic chain of trust verified
Can this brand be convincingly faked? Likely DMARC quarantine flags but does not reject spoofed mail (RFC 7489 §6.3), and no BIMI brand verification — lookalike domains display identically in inboxes; CAA restricts certificate issuance (RFC 8659 §4) but visual brand faking remains open
Is mail transport encryption enforced? Yes Both MTA-STS and DANE enforce encrypted mail delivery
Is certificate issuance controlled? Yes CAA records restrict which certificate authorities may issue certificates
Does this domain publish AI agent instructions? No No llms.txt file detected — AI models have no structured instructions for this domain
Is AI crawling of our content controlled? No robots.txt present but does not block AI crawlers — content may be freely scraped
Has someone manipulated AI recommendations about us? No No indicators of AI recommendation manipulation found
Are there hidden AI prompts on our site? No No hidden prompt artifacts found in page source
Domain Overview
Registrar Amazon Registrar
Email Provider Unknown
Web Hosting Unknown
DNS Hosting Unknown

Technical Findings

Email Authentication
Can this domain be impersonated by email? Unlikely — SPF and DMARC quarantine policy enforced
SPF (Sender Policy) Configured
DMARC (Policy) Configured Policy: quarantine
DKIM (Signatures) Configured
Mail Posture Moderately Protected
Mail Transport Security
Is mail transport encryption enforced? Yes — Both MTA-STS and DANE enforce encrypted mail delivery
MTA-STS Active Mode: enforce
DANE / TLSA Active
TLS-RPT (Reporting) Configured
Mail Transport Enforced Policy-assessed
DNS Security
Can DNS itself be tampered with? No — DNSSEC signed and validated, cryptographic chain of trust verified
DNSSEC Signed & Validated
DNSSEC fully configured and validated — AD (Authenticated Data) flag set by resolver 8.8.8.8 confirming cryptographic chain of trust from root to zone (RFC 4035 §3.2.3)
NS Delegation Healthy Managed DNS
Brand & Certificate Controls
Can this brand be convincingly faked? Likely — DMARC quarantine flags but does not reject spoofed mail (RFC 7489 §6.3), and no BIMI brand verification — lookalike domains display identically in inboxes; CAA restricts certificate issuance (RFC 8659 §4) but visual brand faking remains open
Is certificate issuance controlled? Yes — CAA records restrict which certificate authorities may issue certificates
BIMI (Brand Logo) Not Configured
CAA (Certificate) Configured
AI Surface Scanner Scanned
Does this domain publish AI agent instructions? No — No llms.txt file detected — AI models have no structured instructions for this domain
Is AI crawling of our content controlled? No — robots.txt present but does not block AI crawlers — content may be freely scraped
Has someone manipulated AI recommendations about us? No — No indicators of AI recommendation manipulation found
Are there hidden AI prompts on our site? No — No hidden prompt artifacts found in page source
LLM Context File Not Found No llms.txt file detected
AI Crawler Governance Not Blocking No AI crawler restrictions found in robots.txt
Poisoning Indicators None Found No AI recommendation poisoning indicators detected
Hidden Prompt Artifacts None Found No hidden prompt artifacts detected
Public Exposure Clear No secrets detected in publicly accessible source
Priority Actions 2 total Achievable: Secure
Medium Add DMARC Aggregate Reporting

Add a rua= tag to receive aggregate DMARC reports. Without reporting, you cannot monitor authentication failures.

Medium Upgrade DMARC to Reject

Your DMARC policy is set to quarantine. Upgrade to p=reject for maximum protection — reject instructs receivers to discard spoofed mail entirely rather than quarantining it.

Appendix — Additional Resources

Full technical details including raw DNS records, DKIM public keys, IP/ASN mappings, resolver consensus evidence, and verification commands are available in the Engineer's DNS Intelligence Report.

View Engineer's DNS Intelligence Report

Verify Report Integrity SHA-3-512 Has this report been tampered with? Verify below

Tamper-evident fingerprint binding this analysis to its data, domain, timestamp, and tool version.

945b244a77f75bcb05625087729e50e424af51f3f02a9e2948f6a559f246a2d1766cbdbb9c1949221b2b9942747742ef40e92051dce97aa076b1bb04aa42cd21
12 RFCs evaluated · DNS state at 21 Feb 2026, 15:21 UTC