Identity
40
C
ironscales.com
Posture Score: 74/100
Scanned May 10, 2026 at 5:58 AM UTC
Score History
Attack Surface
91
Reputation
91
Identity Findings
Open recursion on nameserver: ns-874.awsdns-45.net
The nameserver ns-874.awsdns-45.net allows recursive queries from external sources, making it vulnerable to DNS amplification attacks.
💡 Disable recursion on ns-874.awsdns-45.net or restrict it to trusted networks only.
Weak DKIM RSA key (~1296 bits) for selector 'selector1'
RSA keys shorter than 2048 bits are considered weak. Current key is approximately 1296 bits.
💡 Generate a new 2048-bit (or larger) RSA key pair and update the DKIM record.
Weak DKIM RSA key (~1296 bits) for selector 's2'
RSA keys shorter than 2048 bits are considered weak. Current key is approximately 1296 bits.
💡 Generate a new 2048-bit (or larger) RSA key pair and update the DKIM record.
Subdomains have no DMARC enforcement
sp=none explicitly allows unauthenticated mail from subdomains.
💡 Add sp=reject (or sp=quarantine) to your DMARC record to protect subdomains.
Subdomain policy (sp=none) is weaker than domain policy (p=quarantine)
The subdomain policy is less restrictive than the organizational domain policy, leaving subdomains more vulnerable.
💡 Set sp=quarantine or remove sp= to inherit the domain policy.
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.ironscales.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"
Single MX record — no redundancy
Only one MX record exists. If this mail server goes down, all inbound mail will bounce. Most production mail systems use 2+ MX records with different priorities.
💡 Add a secondary MX record with a higher priority number (e.g., priority 20) pointing to a backup mail server.
Slow DNS response from ns-150.awsdns-18.com: 2071.5ms
The nameserver ns-150.awsdns-18.com responded in 2071.5ms, exceeding the 500ms threshold.
💡 Investigate network latency or performance issues on ns-150.awsdns-18.com.
Very low TTL on MX record: 264s
The MX record has a TTL of 264s or less (below 300s).
💡 Increase the TTL to at least 300 seconds unless frequent changes are expected.
Very low TTL on DMARC record: 279s
The DMARC record has a TTL of 279s or less (below 300s).
💡 Increase the TTL to at least 300 seconds unless frequent changes are expected.
NS TTL mismatch between parent and authoritative zone
The NS record TTL in the parent zone (~7186s) differs significantly from the authoritative zone (~172800s).
💡 Align NS record TTLs between the parent zone delegation and the authoritative zone.
SPF record is valid
The SPF record is properly configured with valid syntax and within lookup limits.
SPF record length OK (43 bytes)
SPF record is within safe DNS packet size limits.
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.
All external report destinations authorized
External DMARC report destinations have valid authorization records per RFC 7489 §7.1.
MX records are valid
All MX records are properly configured.
TLS-RPT report destinations are reachable
All TLS-RPT rua= URIs point to resolvable domains.
BIMI record is valid
BIMI is properly configured with a valid logo and DMARC enforcement.
ARC support likely available
MX server software appears to support ARC headers for authentication preservation.
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.
IPv6 readiness is good
IPv6 records are present and properly configured.
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=1
Failure reports generated when any authentication mechanism fails.
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.
Deprecated DMARCbis tags found: pct
The DMARC record contains tags deprecated in DMARCbis: pct. Consider removing these for forward compatibility.
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.
No VMC authority URL in BIMI record
The BIMI record does not specify a VMC (a= tag). Gmail and Apple Mail require a VMC to display brand logos.
Open mail ports on ironscales-com.mail.protection.outlook.com
Detected open mail-related ports: 25
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: 2, Refresh: 7200s, Retry: 900s, Expire: 1209600s, Min TTL: 86400s
Attack Surface Findings
Domain enumerability: medium
The domain has moderate enumerability. CT logs and DNS records reveal significant information about the domain structure.
💡 Restrict zone transfers, use NSEC3 instead of NSEC, consider wildcard certificates to reduce CT log exposure, and implement rate limiting on DNS queries.
DNSSEC is not enabled
No DNSKEY or DS records were found. DNS responses are not cryptographically authenticated.
💡 Enable DNSSEC by generating DNSKEY records and publishing DS records at the registrar.
DNS ANY query returns 17 record(s)
The DNS server responds to ANY queries with 17 record(s). The low record count limits amplification risk, but ANY responses still aid reconnaissance.
💡 Configure the DNS server to refuse or minimize ANY query responses per RFC 8482.
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.
5 subdomain(s) discovered for ironscales.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 ironscales.com and its subdomains. Each certificate reveals subdomain names.
Reputation Findings
SMTP banner mismatch: db1pepf000509ea.mail.protection.outlook.com
The SMTP banner identifies as 'db1pepf000509ea.mail.protection.outlook.com' but the MX hostname is 'ironscales-com.mail.protection.outlook.com' and PTR resolves to 'mail-am6pr04cu00306.inbound.protection.outlook.com'. Microsoft and other receivers flag this mismatch as suspicious infrastructure.
💡 Configure the SMTP server banner to match the MX hostname or PTR record (ironscales-com.mail.protection.outlook.com).
HSTS enabled but missing preload directive on ironscales.com
Strict-Transport-Security: max-age=31536000
💡 Add the "preload" directive to the HSTS header and submit the domain to hstspreload.org.
security.txt present
Found security.txt at https://ironscales.com/.well-known/security.txt.
TLS certificate valid for 73 days
Certificate for ironscales.com expires on 2026-07-22.
Certificate issued by WE1
The certificate for ironscales.com is issued by a third-party CA.
Signature algorithm: ecdsa-with-sha256
The certificate for ironscales.com uses an acceptable signature algorithm.
ECC key: 256 bits
The certificate for ironscales.com uses an adequate ECC key of 256 bits.
SCTs present in certificate
The certificate for ironscales.com contains Signed Certificate Timestamps.
No weak ciphers detected
No known weak cipher suites detected on ironscales.com.
Domain valid for 2562 days
Domain ironscales.com expires on 2033-05-15.
Domain transfer and delete locks enabled
Domain ironscales.com has clientTransferProhibited and clientDeleteProhibited locks.
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 (ironscales-com.mail.protection.outlook.com) uses TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 including Forward Secrecy.
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 contact lookup failed
Could not query abuse contact information.
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.
Could not connect to webmail.ironscales.com
HTTPS request to https://webmail.ironscales.com failed or timed out.
WHOIS registration data
Registrar: Wild West Domains, LLC | Created: 2013-05-15 | Expires: 2033-05-15 | Updated: 2023-05-20
WHOIS privacy protection enabled
Domain ironscales.com has WHOIS privacy/redaction enabled.
Typosquat detected: ironsales.com (has MX!), ironscale.com
2 registered lookalike domain(s) that could be used for phishing against your brand. 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: quarantine
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: quarantine
⚠️ 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: ironscales-com.mail.protection.outlook.com
PTR record proves mail server legitimacy
MX: ironscales-com.mail.protection.outlook.com
Mail server at 52.101.73.19
→
PTR Record
Reverse DNS: mail-as8pr04cu00803.inbound.protection.outlook.com
Mail Server Reputation: ironscales-com.mail.protection.outlook.com
RBL check ensures server is not blacklisted
MX: ironscales-com.mail.protection.outlook.com
Mail server at 52.101.73.19
→
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 policy: quarantine
→
BIMI Record
Brand logo configured
TLS Monitoring Chain
TLS-RPT provides reports about TLS connection failures
TLS Support
Mail servers support TLS encryption
→
TLS-RPT Reporting
TLS failure reporting configured
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/ironscales.com.svg" alt="Email Security Grade">
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