
Engineer's DNS Intelligence Report
Publish an MTA-STS DNS record and host a policy file at https://mta-sts.yourdomain.com/.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).
Publish a TLS-RPT DNS record to receive reports about TLS delivery failures to your domain.
Since DNSSEC is already active, you can add TLSA records for your MX hosts to enable DANE. This cryptographically pins TLS certificates for mail delivery.
Email Security Methodology Can this domain be impersonated by email? No
SPF Record RFC 7208 §4 Verified
SPF valid with industry-standard soft fail (~all), 3/10 lookups
DMARC Policy RFC 7489 §6.3 Verified
DMARC policy reject (100%) - excellent protection
pct= with t= (testing flag), add np= (non-existent subdomain policy), and mandate DNS tree walk for policy discovery instead of the Public Suffix List.DKIM Records RFC 6376 §3.6 Verified
Found DKIM for 2 selector(s) with strong keys (2048-bit)
l= tag body length vulnerability (attacker appends unsigned content to signed mail),
weak key exploitation (keys below 1024-bit are cryptographically breakable per RFC 6376 §3.3.3),
DKIM replay attacks (re-sending legitimately signed messages at scale)
MTA-STS RFC 8461 §3 Verified
No MTA-STS record found
MTA-STS policy enforcement is evaluated in Mail Transport Security below.
TLS-RPT RFC 8460 §3 Verified
No TLS-RPT record found
Email Security Management Actively Managed
DANE / TLSA Verified Recon Methodology Can mail servers establish identity without a public CA? No
No MX records available — DANE check skipped
Two mechanisms protect email in transit. DANE is the primary standard; MTA-STS is the alternative for domains that cannot deploy DNSSEC:
- DNSSEC + DANE (RFC 7672) — Cryptographic chain of trust from DNS root to mail server certificate. Eliminates reliance on certificate authorities. No trust-on-first-use weakness. Requires DNSSEC.
- MTA-STS (RFC 8461) — HTTPS-based policy requiring TLS for mail delivery. Works without DNSSEC but relies on CA trust and is vulnerable on first use (§10). Created for domains where “deploying DNSSEC is undesirable or impractical” (§2).
Industry trend: Microsoft Exchange Online enforces inbound DANE with DNSSEC (GA October 2024), and providers like Proton Mail and Fastmail also support DANE. Google Workspace does not support DANE and relies on MTA-STS. Both mechanisms coexist because DANE is backward-compatible — senders skip the check if the domain isn't DNSSEC-signed (RFC 7672 §1.3).
Brand Security Can this brand be convincingly faked?
BIMI BIMI Spec Verified Success VMC SVG
BIMI with VMC certificate (from Verified CA)
CAA RFC 8659 §4 Verified Warning
No CAA records found - any CA can issue certificates
Domain Security Methodology Can DNS responses be tampered with in transit?
DNSSEC RFC 4033 §2 Verified Signed ECDSA P-256/SHA-256
DNSSEC fully configured and validated - AD flag confirmed by resolver
NS Delegation Verified
2 nameserver(s) configured
Traffic & Routing Where does this domain's traffic actually terminate?
AIPv4 Address
AAAAIPv6 Address
MXMail Servers
SRVServices
Subdomain Discovery RFC 6962 Recon LIVE What subdomains and infrastructure are exposed in certificate logs? Unavailable
How did we find these?Passive discovery using Certificate Transparency Logs — publicly auditable records of every TLS certificate ever issued. CT log service was slow or unavailable — showing DNS-probed subdomains only
DNS Evidence Diff Side-by-side comparison
192.0.66.231
2a04:fa87:fffd::c000:42e8
v=DMARC1; p=reject; rua=mailto:b1fabe8b7f3f41a181ecd1253a794edf@dmarc-reports.cloudflare.net,mailto:reports@dmarc.cyber.dhs.gov
wally.ns.cloudflare.com.
ernest.ns.cloudflare.com.
ernest.ns.cloudflare.com. dns.cloudflare.com. 2395513730 10000 2400 604800 1800
_ag15rep8dkdk6c65mcqgkcmtszqxbqt
google-site-verification=TfE8QdIcAwpNcoG9l9AxMIzz69S5PPd8peS-Pj1qtXk
v=spf1 include:spf.mail.dmz.pitc.gov include:spf.protection.outlook.com include:spf.mandrillapp.com ip4:214.3.115.10/32 ip4:214.3.115.12/32 ip4:214.3.115.14/32 ip4:214.3.115.225/32 ip4:214.3.140.16/32 ip4:214.3.140.22/32 ip4:214.3.140.255/32 ~all
MS=ms61205702
DNS History Timeline BETA
When was a record added, removed, or changed — and could that change be the problem?
Confirm Your Email Configuration
This tool analyzes DNS records, but to verify actual email delivery, send a test email to Red Sift Investigate. Their tool shows exactly how your emails arrive, including SPF/DKIM/DMARC pass/fail results in the headers.
DATA FRESHNESS & METHODOLOGY
All security-critical records (SPF, DMARC, DKIM, DANE/TLSA, DNSSEC, MTA-STS, TLS-RPT, BIMI, CAA) are queried live from authoritative nameservers and cross-referenced against 5 independent public DNS resolvers (Cloudflare, Google, Quad9, OpenDNS, DNS4EU) at the time of each analysis. No security verdict uses cached data.
Registrar data (RDAP) is cached for up to 24 hours because domain ownership and registration details change infrequently. Certificate Transparency logs (subdomain discovery via RFC 6962) are cached for 1 hour because CT entries are append-only historical records. Sections using cached data are marked with a CACHED badge; live queries show LIVE.
Intelligence Sources
This analysis used 4 DNS resolvers (consensus), reverse DNS (PTR), Team Cymru (ASN attribution), IANA RDAP (registrar), crt.sh (CT logs), and SMTP probing (transport). All using open-standard protocols.
Verify Report Integrity SHA-3-512 Has this report been altered since generation? Verify below
This cryptographic hash seals the analysis data, domain, timestamp, and tool version into a tamper-evident fingerprint. Any modification to the report data will produce a different hash. This is distinct from the posture hash (used for drift detection) — the integrity hash uniquely identifies this specific report instance.
5960223041d6130152ff5ed9827a884635f4afb587eeedd55be5b8d8bed1fa54a1e3ddff473e8744e4cd3bf1cfab6b2889169c402904c30a6148a2472f9c2834
Download the intelligence dump and verify its integrity, like you would a Kali ISO or any critical artifact. The SHA-3-512 checksum covers every byte of the download — deterministic serialization ensures identical hashes across downloads.
After downloading, verify with any of these commands:
Tip: cd ~/Downloads first (or wherever you saved the files).
cat dns-intelligence-whitehouse.gov.json.sha3 && echo '---' && openssl dgst -sha3-512 dns-intelligence-whitehouse.gov.json
python3 -c "import hashlib; print(hashlib.sha3_512(open('dns-intelligence-whitehouse.gov.json','rb').read()).hexdigest())"
sha3sum -a 512 dns-intelligence-whitehouse.gov.json
.sha3 file or the checksum API at /api/analysis/485/checksum. Hash algorithm: SHA-3-512 (Keccak, NIST FIPS 202).
Every finding in this report is backed by DNS queries you can run yourself. These vetted one-liners reproduce the exact checks used to build this report for whitehouse.gov. Our analysis adds multi-resolver consensus, RFC-based evaluation, and cross-referencing — but the underlying data is always independently verifiable. We are intelligence analysts, not gatekeepers.
DNS Records
dig +noall +answer whitehouse.gov A
dig +noall +answer whitehouse.gov AAAA
dig +noall +answer whitehouse.gov MX
dig +noall +answer whitehouse.gov NS
dig +noall +answer whitehouse.gov TXT
Email Authentication
dig +short whitehouse.gov TXT | grep -i spf
dig +short _dmarc.whitehouse.gov TXT
dig +short mandrill._domainkey.whitehouse.gov TXT
dig +short selector1._domainkey.whitehouse.gov TXT
Domain Security
dig +dnssec +noall +answer whitehouse.gov DNSKEY
dig +noall +answer whitehouse.gov DS
dig +dnssec +cd whitehouse.gov A @1.1.1.1
Transport Security
dig +noall +answer _25._tcp.MX_HOST TLSA
dig +short _mta-sts.whitehouse.gov TXT
curl -sL https://mta-sts.whitehouse.gov/.well-known/mta-sts.txt
dig +short _smtp._tls.whitehouse.gov TXT
Brand & Trust
dig +short default._bimi.whitehouse.gov TXT
dig +noall +answer whitehouse.gov CAA
DNS Records
dig +noall +answer whitehouse.gov HTTPS
Domain Security
dig +noall +answer whitehouse.gov CDS
Infrastructure Intelligence
curl -sL 'https://rdap.org/domain/whitehouse.gov' | python3 -m json.tool | head -50
curl -s 'https://crt.sh/?q=%25.whitehouse.gov&output=json' | python3 -c "import json,sys; [print(e['name_value']) for e in json.load(sys.stdin)]" | sort -u | head -20
curl -sL https://whitehouse.gov/.well-known/security.txt | head -20
AI Surface
curl -sI https://whitehouse.gov/llms.txt | head -5
curl -s https://whitehouse.gov/robots.txt | grep -i -E 'GPTBot|ChatGPT|Claude|Anthropic|Google-Extended|CCBot|PerplexityBot'
Infrastructure Intelligence
dig +short 231.66.0.192.origin.asn.cymru.com TXT
dig, openssl, and curl — standard tools available on macOS, Linux, and WSL. Results may vary slightly due to DNS propagation timing and resolver caching.
Appendix: Verification Commands
DNS Records
dig +noall +answer whitehouse.gov A
dig +noall +answer whitehouse.gov AAAA
dig +noall +answer whitehouse.gov MX
dig +noall +answer whitehouse.gov NS
dig +noall +answer whitehouse.gov TXT
Email Authentication
dig +short whitehouse.gov TXT | grep -i spf
dig +short _dmarc.whitehouse.gov TXT
dig +short mandrill._domainkey.whitehouse.gov TXT
dig +short selector1._domainkey.whitehouse.gov TXT
Domain Security
dig +dnssec +noall +answer whitehouse.gov DNSKEY
dig +noall +answer whitehouse.gov DS
dig +dnssec +cd whitehouse.gov A @1.1.1.1
Transport Security
dig +noall +answer _25._tcp.MX_HOST TLSA
dig +short _mta-sts.whitehouse.gov TXT
curl -sL https://mta-sts.whitehouse.gov/.well-known/mta-sts.txt
dig +short _smtp._tls.whitehouse.gov TXT
Brand & Trust
dig +short default._bimi.whitehouse.gov TXT
dig +noall +answer whitehouse.gov CAA
DNS Records
dig +noall +answer whitehouse.gov HTTPS
Domain Security
dig +noall +answer whitehouse.gov CDS
Infrastructure Intelligence
curl -sL 'https://rdap.org/domain/whitehouse.gov' | python3 -m json.tool | head -50
curl -s 'https://crt.sh/?q=%25.whitehouse.gov&output=json' | python3 -c "import json,sys; [print(e['name_value']) for e in json.load(sys.stdin)]" | sort -u | head -20
curl -sL https://whitehouse.gov/.well-known/security.txt | head -20
AI Surface
curl -sI https://whitehouse.gov/llms.txt | head -5
curl -s https://whitehouse.gov/robots.txt | grep -i -E 'GPTBot|ChatGPT|Claude|Anthropic|Google-Extended|CCBot|PerplexityBot'
Infrastructure Intelligence
dig +short 231.66.0.192.origin.asn.cymru.com TXT
