Identity
39
C
hotmail.com
Posture Score: 71/100
Scanned May 29, 2026 at 6:50 PM UTC
Attack Surface
92
Reputation
83
Identity Findings
Subdomains have no DMARC enforcement
No sp= tag set and p=none. Subdomains inherit the monitoring-only policy, leaving them open to spoofing.
💡 Add sp=reject (or sp=quarantine) to your DMARC record to protect subdomains.
FCrDNS failure: no PTR for 52.101.11.11 (hotmail-com.olc.protection.outlook.com)
The IP 52.101.11.11 has no PTR record. Forward-confirmed reverse DNS requires a PTR that resolves back to the IP.
💡 Configure a PTR record for the IP that matches the mail server hostname.
FCrDNS failure: no PTR for 52.101.9.3 (hotmail-com.olc.protection.outlook.com)
The IP 52.101.9.3 has no PTR record. Forward-confirmed reverse DNS requires a PTR that resolves back to the IP.
💡 Configure a PTR record for the IP that matches the mail server hostname.
FCrDNS failure: no PTR for 52.101.68.2 (hotmail-com.olc.protection.outlook.com)
The IP 52.101.68.2 has no PTR record. Forward-confirmed reverse DNS requires a PTR that resolves back to the IP.
💡 Configure a PTR record for the IP that matches the mail server hostname.
FCrDNS failure: no PTR for 52.101.10.0 (hotmail-com.olc.protection.outlook.com)
The IP 52.101.10.0 has no PTR record. Forward-confirmed reverse DNS requires a PTR that resolves back to the IP.
💡 Configure a PTR record for the IP that matches the mail server hostname.
DMARC policy is monitoring-only (p=none)
The p=none policy only monitors; it does not instruct receivers to quarantine or reject unauthenticated mail.
💡 Upgrade to p=quarantine or p=reject after reviewing aggregate reports.
No PTR record for MX IP: 52.101.11.11
The IP 52.101.11.11 (for hotmail-com.olc.protection.outlook.com) has no reverse DNS record.
💡 Configure a PTR record for the mail server IP.
No PTR record for MX IP: 52.101.9.3
The IP 52.101.9.3 (for hotmail-com.olc.protection.outlook.com) has no reverse DNS record.
💡 Configure a PTR record for the mail server IP.
No PTR record for MX IP: 52.101.68.2
The IP 52.101.68.2 (for hotmail-com.olc.protection.outlook.com) has no reverse DNS record.
💡 Configure a PTR record for the mail server IP.
No PTR record for MX IP: 52.101.10.0
The IP 52.101.10.0 (for hotmail-com.olc.protection.outlook.com) has no reverse DNS record.
💡 Configure a PTR record for the mail server IP.
No CAA iodef tag configured
No iodef tag is present in the CAA records. CA policy violation reports will not be sent.
💡 Add an iodef CAA record. Example: 0 iodef "mailto:security@example.com"
SPF record is valid
The SPF record is properly configured with valid syntax and within lookup limits.
SPF record length OK (36 bytes)
SPF record is within safe DNS packet size limits.
DKIM records are valid
DKIM records found and validated for selectors: selector1
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.
No deprecated DMARCbis tags present
The DMARC record does not use any tags deprecated in DMARCbis (pct, rf, ri).
MTA-STS and TLS-RPT are properly configured
MTA-STS policy is enforced and TLS reporting is configured.
TLS-RPT report destinations are reachable
All TLS-RPT rua= URIs point to resolvable domains.
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.
STARTTLS downgrade resistance is adequate
STARTTLS is supported with modern TLS and protected by MTA-STS and/or DANE.
NS delegation is properly configured
All nameservers are responsive, consistent, and properly secured.
DNS responses are consistent across all nameservers
All authoritative nameservers return consistent answers with proper AA flags.
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=1:s:d
Failure reporting option: 1:s:d
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.
No BIMI record found
BIMI is not configured. Your brand logo will not display in supporting email clients.
Open mail ports on hotmail-com.olc.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: 1, Refresh: 3600s, Retry: 300s, Expire: 2419200s, Min TTL: 300s
Authorized certificate authorities
CAA records restrict certificate issuance to: globalsign.com, microsoft.com, digicert.com
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.
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 excessive DNS information exposure detected
No HINFO, LOC, RP records, version disclosures, or zone walking vulnerabilities were found.
2 subdomain(s) discovered for hotmail.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 hotmail.com and its subdomains. Each certificate reveals subdomain names.
Microsoft Autodiscover endpoint detected (authenticated)
The Autodiscover endpoint at autodiscover.hotmail.com is active and requires authentication.
Reputation Findings
Listed on dnsbl.spfbl.net
52.101.11.18 (hotmail-com.olc.protection.outlook.com) is listed on blacklist dnsbl.spfbl.net (response: 127.0.0.4).
💡 Visit the dnsbl.spfbl.net website to request delisting. Investigate the root cause (compromised account, open relay, spam) before requesting removal.
HSTS enabled but missing preload directive on hotmail.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://hotmail.com/.well-known/security.txt.
💡 Create a /.well-known/security.txt file per RFC 9116 with Contact, Expires, and optionally Encryption and Policy fields.
TLS certificate valid for 274 days
Certificate for hotmail.com expires on 2027-02-27.
Certificate issued by Microsoft TLS G2 RSA CA OCSP 16
The certificate for hotmail.com is issued by a third-party CA.
Signature algorithm: rsa-sha384
The certificate for hotmail.com uses an acceptable signature algorithm.
RSA key: 2048 bits
The certificate for hotmail.com uses an adequate RSA key of 2048 bits.
SCTs present in certificate
The certificate for hotmail.com contains Signed Certificate Timestamps.
No weak ciphers detected
No known weak cipher suites detected on hotmail.com.
Domain valid for 302 days
Domain hotmail.com expires on 2027-03-28.
Domain transfer and delete locks enabled
Domain hotmail.com has clientTransferProhibited and clientDeleteProhibited locks.
No disposable email provider MX records
MX records for hotmail.com do not match known disposable email provider patterns.
Domain is 11020 days old
Domain hotmail.com was registered 1996-03-27.
No wildcard MX records
No wildcard MX records detected for hotmail.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 (hotmail-com.olc.protection.outlook.com) uses TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 including Forward Secrecy.
SMTP banner from hosted mail provider
The MX (hotmail-com.olc.protection.outlook.com) is a hosted mail service. Banner alignment is managed by the provider and not actionable by the domain owner.
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.
Could not connect to webmail.hotmail.com
HTTPS request to https://webmail.hotmail.com failed or timed out.
WHOIS registration data
Registrar: MarkMonitor Inc. | Created: 1996-03-27 | Expires: 2027-03-28 | Updated: 2026-01-29
WHOIS privacy protection not detected
Domain hotmail.com does not appear to have WHOIS privacy protection. Registrant details may be publicly visible.
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: htmail.com (has MX!), hotmil.com (has MX!), hotmai.com (has MX!), hotmali.com (has MX!), yotmail.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: none
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: none
⚠️ 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: hotmail-com.olc.protection.outlook.com
PTR record proves mail server legitimacy
MX: hotmail-com.olc.protection.outlook.com
Mail server at 52.101.9.13
→
PTR Record
No PTR record
⚠️ Mail server hotmail-com.olc.protection.outlook.com (52.101.9.13) lacks a PTR record. Many receiving servers require matching forward and reverse DNS for spam prevention.
Mail Server Reputation: hotmail-com.olc.protection.outlook.com
RBL check ensures server is not blacklisted
MX: hotmail-com.olc.protection.outlook.com
Mail server at 52.101.9.13
→
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
Mode: enforce
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
BIMI not 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 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/hotmail.com.svg" alt="Email Security Grade">
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