Identity
63
D
dhl.com
Posture Score: 65/100
Scanned May 28, 2026 at 3:58 AM UTC
Attack Surface
47
Reputation
86
Identity Findings
No NS records found
No nameserver records could be retrieved for this domain.
💡 Ensure NS records are properly configured at your registrar and in your zone file.
Cannot check DNS consistency — no NS records
No nameserver records could be retrieved for consistency checking.
💡 Ensure NS records are properly configured.
No MTA-STS record found
Without MTA-STS, mail transport encryption cannot be enforced and is vulnerable to downgrade attacks.
💡 Publish a _mta-sts TXT record and host a policy file at https://mta-sts.dhl.com/.well-known/mta-sts.txt
STARTTLS without MTA-STS or DANE protection
STARTTLS alone is vulnerable to downgrade attacks. Neither MTA-STS nor DANE is configured to enforce encryption.
💡 Deploy MTA-STS and/or DANE to protect against STARTTLS stripping attacks.
No CAA records found
No CAA records are configured. Any certificate authority can issue certificates for this domain.
💡 Add CAA records to restrict certificate issuance. Example: 0 issue "letsencrypt.org"
No TLS-RPT record found
Without TLS-RPT, you will not receive reports about TLS negotiation failures.
💡 Publish a _smtp._tls TXT record (e.g. "v=TLSRPTv1; rua=mailto:tls-reports@dhl.com").
ARC support not detected
No evidence of ARC (Authenticated Received Chain) support on MX servers. Forwarded messages may lose authentication.
💡 Consider enabling ARC signing on your mail servers to preserve authentication through forwarding.
SPF record is valid
The SPF record is properly configured with valid syntax and within lookup limits.
SPF record length OK (253 bytes)
SPF record is within safe DNS packet size limits.
DKIM records are valid
DKIM records found and validated for selectors: s1, s2, k2, zendesk1
DKIM cryptographic configuration is compliant
No RFC 8301 compliance issues detected in DKIM key configuration.
DKIM key strength indicates modern key management
All DKIM keys use RSA-2048+ or Ed25519, consistent with current best practices.
No external DMARC report destinations
All DMARC report URIs point to the same domain — no external authorization needed.
Subdomains protected (sp=reject)
DMARC subdomain policy enforces quarantine or reject on unauthenticated subdomain mail.
No deprecated DMARCbis tags present
The DMARC record does not use any tags deprecated in DMARCbis (pct, rf, ri).
MX records are valid
All MX records are properly configured.
BIMI record is valid
BIMI is properly configured with a valid logo and DMARC enforcement.
VMC URL is accessible
The BIMI VMC authority URL is reachable and returns a valid response.
Meets bulk sender authentication requirements
Domain has SPF, DKIM, and DMARC — meeting Google/Yahoo 2024 bulk sender requirements for email authentication.
SMTP security checks passed
No open relay, VRFY/EXPN, or banner disclosure issues detected.
SMTP RFC 5321 compliance checks passed
The mail server accepts postmaster@ and abuse@ and uses a valid FQDN in EHLO.
DNS TTL values follow best practices
All critical DNS record TTLs are within recommended ranges.
DKIM2 not detected
No DKIM key record with v=2 was found across common selectors. DKIM2 is an emerging standard and not yet widely deployed.
DMARC alignment: adkim=r, aspf=r
DKIM alignment is relaxed, SPF alignment is relaxed.
DMARC failure reporting: fo=0
Failure reports generated when all authentication mechanisms fail.
DMARCbis np tag absent
The DMARC record does not include the np (non-existent subdomain policy) tag. Consider adding np=reject to protect non-existent subdomains under DMARCbis.
DMARCbis psd tag absent
The DMARC record does not include the psd (public suffix domain) indicator. Consider adding psd=n to explicitly identify this as an organizational domain.
REQUIRETLS not advertised
The primary MX does not advertise REQUIRETLS (RFC 8689). This is an emerging standard — MTA-STS and DANE provide adequate TLS enforcement for most deployments.
No DANE/TLSA records found
DANE is not configured for any MX server. This is optional but provides strong certificate binding.
Open mail ports on dhl-com.fortimailcloud.com
Detected open mail-related ports: 25, 465, 587, 993, 995
Domain is IPv4-only
No AAAA records found for the domain, MX servers, or nameservers. The domain operates on IPv4 only.
RFC 8058 one-click unsubscribe assessment
DKIM signing is configured. RFC 8058 compliance depends on List-Unsubscribe and List-Unsubscribe-Post headers being included in outbound messages and DKIM signatures.
MX IP network diversity
All MX IPs are in the same /16 network. Consider diversifying across networks for resilience.
SOA record parameters
Serial: 2016118769, Refresh: 10800s, Retry: 3600s, Expire: 604800s, Min TTL: 300s
Attack Surface Findings
Weak DNSSEC RSA key: 336 bits
The DNSKEY uses an RSA key of 336 bits, below the recommended 2048 bits.
💡 Generate a new DNSKEY with at least 2048-bit RSA or migrate to ECDSA/Ed25519.
Weak DNSSEC RSA key: 336 bits
The DNSKEY uses an RSA key of 336 bits, below the recommended 2048 bits.
💡 Generate a new DNSKEY with at least 2048-bit RSA or migrate to ECDSA/Ed25519.
Weak DNSSEC RSA key: 336 bits
The DNSKEY uses an RSA key of 336 bits, below the recommended 2048 bits.
💡 Generate a new DNSKEY with at least 2048-bit RSA or migrate to ECDSA/Ed25519.
Weak DNSSEC RSA key: 336 bits
The DNSKEY uses an RSA key of 336 bits, below the recommended 2048 bits.
💡 Generate a new DNSKEY with at least 2048-bit RSA or migrate to ECDSA/Ed25519.
Weak DNSSEC RSA key: 336 bits
The DNSKEY uses an RSA key of 336 bits, below the recommended 2048 bits.
💡 Generate a new DNSKEY with at least 2048-bit RSA or migrate to ECDSA/Ed25519.
Weak DNSSEC RSA key: 336 bits
The DNSKEY uses an RSA key of 336 bits, below the recommended 2048 bits.
💡 Generate a new DNSKEY with at least 2048-bit RSA or migrate to ECDSA/Ed25519.
DNS ANY query returns 78 record(s)
The DNS server responds to ANY queries with 78 record(s), creating significant DNS amplification risk.
💡 Configure the DNS server to refuse or minimize ANY query responses per RFC 8482.
Domain enumerability: low
The domain has low enumerability. Proper NSEC3 configuration and limited CT exposure reduce the attack surface.
All MX records resolve correctly
No dangling MX records detected — all MX hostnames resolve to valid IP addresses.
Explicit MX records present
The domain has explicit MX records — no implicit A-record fallback delivery.
No internal information leakage detected
No non-routable IP addresses or internal references were found in public DNS records.
No email autodiscovery endpoints detected
No Microsoft Autodiscover, Mozilla Autoconfig, or email SRV records were found.
20 subdomain(s) discovered for dhl.com
Subdomains were enumerated via Certificate Transparency logs, DNS wordlist brute-forcing, and DNS record analysis.
0 certificate(s) found in CT logs
Certificate Transparency logs contain 0 certificate(s) for dhl.com and its subdomains. Each certificate reveals subdomain names.
NSEC3 authenticated denial of existence
The domain uses NSEC3 with 0 iteration(s) and salt '824D2ECAF21A45F1'.
DNSSEC is enabled
DNSKEY and/or DS records are present, indicating DNSSEC is configured.
Reputation Findings
Missing domain locks: clientDeleteProhibited
Domain dhl.com is missing protective locks: clientDeleteProhibited.
💡 Enable clientTransferProhibited and clientDeleteProhibited locks through your registrar to prevent unauthorized transfers or deletions.
Missing Strict-Transport-Security on dhl.com
The Strict-Transport-Security header is not set on https://dhl.com.
💡 Add the Strict-Transport-Security header with a max-age of at least 31536000 (1 year) and include the includeSubDomains directive.
HSTS enabled but missing preload directive on webmail.dhl.com
Strict-Transport-Security: max-age=31536000; includeSubDomains
💡 Add the "preload" directive to the HSTS header and submit the domain to hstspreload.org.
Missing security.txt
No security.txt found at https://dhl.com/.well-known/security.txt.
💡 Create a /.well-known/security.txt file per RFC 9116 with Contact, Expires, and optionally Encryption and Policy fields.
Not listed on any DNS blacklists
Domain and MX IPs checked against 55 DNSBLs — no listings found.
TLS certificate valid for 178 days
Certificate for dhl.com expires on 2026-11-22.
Certificate issued by DHL Global TLS CA I6
The certificate for dhl.com is issued by a third-party CA.
Signature algorithm: rsa-sha256
The certificate for dhl.com uses an acceptable signature algorithm.
RSA key: 2048 bits
The certificate for dhl.com uses an adequate RSA key of 2048 bits.
SCTs present in certificate
The certificate for dhl.com contains Signed Certificate Timestamps.
No weak ciphers detected
No known weak cipher suites detected on dhl.com.
Domain valid for 361 days
Domain dhl.com expires on 2027-05-24.
No disposable email provider MX records
MX records for dhl.com do not match known disposable email provider patterns.
Domain is 13516 days old
Domain dhl.com was registered 1989-05-25.
No wildcard MX records
No wildcard MX records detected for dhl.com.
TLD has good reputation
The .com TLD is not on known abuse watchlists.
DMARC reporting destinations look legitimate
DMARC rua/ruf addresses do not point to known URL shortener services.
MX records point to stable infrastructure
No MX records point to known dynamic DNS service domains.
Strong TLS configuration on primary MX
Primary MX (dhl-com.fortimailcloud.com) uses TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 including Forward Secrecy.
SMTP banner matches infrastructure identity
The SMTP banner (proxy-dhl-com.fortimailcloud.com) aligns with the MX hostname (dhl-com.fortimailcloud.com).
Google Safe Browsing DNS check — no flag detected
DNS-based Safe Browsing lookup returned no results. Full verification requires the Google Safe Browsing API key.
Abuse contacts found for MX IPs
Abuse contact information retrieved via abusix.org DNS lookup.
PhishTank — API key required
PhishTank phishing database check requires an API key.
Sender Score — API key required
Sender Score reputation check requires an API key.
Cisco Talos — API key required
Cisco Talos IP reputation check requires an API key.
WHOIS registration data
Registrar: Key-Systems GmbH | Created: 1989-05-25 | Expires: 2027-05-24 | Updated: 2026-04-22
WHOIS privacy protection enabled
Domain dhl.com has WHOIS privacy/redaction enabled.
Bulletproof Hosting Detection — API key required
Checking IPs against known bulletproof hosting providers requires a threat intelligence API key.
Threat Intelligence Feeds — API key required
Checking domain against threat intelligence feeds requires API keys (e.g., VirusTotal, AbuseIPDB).
Typosquat detected: hl.com (has MX!), dh.com (has MX!), hdl.com (has MX!), dlh.com (has MX!), shl.com (has MX!)
30 registered lookalike domain(s) that could be used for phishing against your brand. Showing top 5 of 30. Domains with MX records can send and receive email, making them high-risk phishing vectors.
Dependency Chains
DMARC Authentication Chain (SPF)
DMARC uses SPF to verify that emails come from authorized servers
SPF Record
SPF record found and configured
→
DMARC Policy
DMARC policy missing
⚠️ DMARC policy is missing. Even with SPF configured, you lack the policy layer that tells receiving servers what to do with authentication failures.
DMARC Authentication Chain (DKIM)
DMARC uses DKIM to verify that emails have not been tampered with
DKIM Signature
DKIM signature missing
→
DMARC Policy
DMARC policy missing
⚠️ DKIM signature is missing. DMARC relies on DKIM to verify email integrity and prevent tampering. Without DKIM, DMARC alignment will fail for cryptographic verification.
Mail Server Identity: dhl-com.fortimailcloud.com
PTR record proves mail server legitimacy
MX: dhl-com.fortimailcloud.com
Mail server at 154.52.13.119
→
PTR Record
Reverse DNS: dhl-com-1.fortimailcloud.com
Mail Server Reputation: dhl-com.fortimailcloud.com
RBL check ensures server is not blacklisted
MX: dhl-com.fortimailcloud.com
Mail server at 154.52.13.119
→
RBL Status
Not blacklisted
Enforced Encryption Chain
MTA-STS enforces TLS encryption to prevent man-in-the-middle attacks
TLS Support
Mail servers support TLS encryption
→
MTA-STS Policy
MTA-STS not configured
⚠️ MTA-STS policy is missing. Even with TLS support, you lack the enforcement layer that prevents attackers from stripping encryption (downgrade attacks).
Brand Identity Chain
BIMI displays your logo in email clients, but requires DMARC enforcement
DMARC Enforcement
DMARC not enforced (p=none or missing)
→
BIMI Record
Brand logo configured
⚠️ DMARC is not enforced. BIMI requires a DMARC policy of "quarantine" or "reject" to prove you have strong email authentication. Without enforcement, email clients will not display your logo.
TLS Monitoring Chain
TLS-RPT provides reports about TLS connection failures
TLS Support
Mail servers support TLS encryption
→
TLS-RPT Reporting
TLS-RPT not configured
⚠️ TLS-RPT is not configured. Without TLS reporting, you have no visibility into TLS connection failures that may be impacting email delivery.
Security Checks
MX Records
✓
SPF Record
✓
DKIM Record
✗
DMARC Policy
✗
BIMI Record
✓
CAA Records
✗
DNSSEC
✓
MTA-STS
✗
TLS-RPT
✗
Embed Badge
Display your domain's security grade on your website or README:
<img src="https://scan.ractermx.com/badge/dhl.com.svg" alt="Email Security Grade">
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