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mi.com

Posture Score: 52/100

Scanned May 27, 2026 at 7:08 PM UTC

Identity

24

Attack Surface

43

Reputation

88

Identity Findings

No DMARC record found
The domain has no DMARC record, providing no policy for handling unauthenticated email.
💡 Publish a DMARC TXT record at _dmarc.mi.com (e.g. "v=DMARC1; p=reject; rua=mailto:dmarc@mi.com").
critical
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.
critical
Does not meet bulk sender requirements
Google and Yahoo require all bulk senders to have SPF+DKIM, DMARC, and one-click unsubscribe. Issues: No DMARC record published (required since Feb 2024)
💡 Publish SPF, DKIM, and DMARC records. Implement RFC 8058 one-click unsubscribe for marketing mail.
high
FCrDNS failure: no PTR for 145.190.68.5 (cname-app-com-amsproxy.w.mi-dun.com)
The IP 145.190.68.5 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.
high
Cannot check DNS consistency — no NS records
No nameserver records could be retrieved for consistency checking.
💡 Ensure NS records are properly configured.
high
No DKIM records found
No DKIM records were found after probing 56 common selectors. The domain may use a custom selector not discoverable via external scan.
💡 Configure DKIM signing and publish the public key at <selector>._domainkey.mi.com
medium
No PTR record for MX IP: 145.190.68.5
The IP 145.190.68.5 (for cname-app-com-amsproxy.w.mi-dun.com) has no reverse DNS record.
💡 Configure a PTR record for the mail server IP.
medium
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.mi.com/.well-known/mta-sts.txt
medium
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.
medium
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"
medium
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@mi.com").
low
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.
low
SPF record is valid
The SPF record is properly configured with valid syntax and within lookup limits.
pass
SPF record length OK (46 bytes)
SPF record is within safe DNS packet size limits.
pass
DKIM cryptographic configuration is compliant
No RFC 8301 compliance issues detected in DKIM key configuration.
pass
SMTP security checks passed
No open relay, VRFY/EXPN, or banner disclosure issues detected.
pass
SMTP RFC 5321 compliance checks passed
The mail server accepts postmaster@ and abuse@ and uses a valid FQDN in EHLO.
pass
Mail server port configuration is acceptable
No concerning port exposure detected.
pass
DNS TTL values follow best practices
All critical DNS record TTLs are within recommended ranges.
pass
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.
informational
No DANE/TLSA records found
DANE is not configured for any MX server. This is optional but provides strong certificate binding.
informational
No BIMI record found
BIMI is not configured. Your brand logo will not display in supporting email clients.
informational
Domain is IPv4-only
No AAAA records found for the domain, MX servers, or nameservers. The domain operates on IPv4 only.
informational
RFC 8058 one-click unsubscribe assessment
No DKIM signing detected. RFC 8058 one-click unsubscribe requires DKIM-signed List-Unsubscribe headers.
informational
MX IP network diversity
All MX IPs are in the same /16 network. Consider diversifying across networks for resilience.
informational
SOA record parameters
Serial: 1779882026, Refresh: 3600s, Retry: 180s, Expire: 1209600s, Min TTL: 180s
informational

Attack Surface Findings

AXFR zone transfer allowed on ns3.dnsv5.com
The nameserver ns3.dnsv5.com allows AXFR zone transfers, exposing the complete zone contents to anyone. This is the most severe enumerability issue.
💡 Restrict AXFR transfers on ns3.dnsv5.com to authorized secondary nameservers only using allow-transfer ACLs.
critical
AXFR zone transfer allowed on ns4.dnsv5.com
The nameserver ns4.dnsv5.com allows AXFR zone transfers, exposing the complete zone contents to anyone. This is the most severe enumerability issue.
💡 Restrict AXFR transfers on ns4.dnsv5.com to authorized secondary nameservers only using allow-transfer ACLs.
critical
NSEC records enable zone walking
The domain uses NSEC records for DNSSEC authenticated denial of existence. NSEC records can be walked to enumerate all names in the zone, effectively disclosing the entire zone contents.
💡 Switch from NSEC to NSEC3 with opt-out to prevent zone enumeration. Use NSEC3 with a random salt and sufficient iterations.
high
Domain enumerability: high
The domain is highly enumerable. Zone transfers, NSEC zone walking, or a combination of factors make it easy to discover all DNS records.
💡 Restrict zone transfers, use NSEC3 instead of NSEC, consider wildcard certificates to reduce CT log exposure, and implement rate limiting on DNS queries.
high
HINFO record exposes system information
An HINFO record for mi.com reveals hardware/OS details: CPU=, OS=. This aids attacker reconnaissance.
💡 Remove the HINFO record from public DNS. HINFO records are rarely needed and expose unnecessary system details.
medium
LOC record exposes geographic location
A LOC record for mi.com reveals the physical location of infrastructure. This aids targeted attacks.
💡 Remove the LOC record from public DNS unless geographic information is intentionally published.
medium
No MX records — A-record fallback active
The domain has no MX records but has an A record. Per RFC 5321, mail servers will attempt delivery to the A record IP. This domain may be silently accepting mail without SPF/DKIM/DMARC protection.
💡 If this domain should not receive mail, publish a Null MX record (RFC 7505): "0 ." as the MX. If it should receive mail, add proper MX records.
low
DNS ANY query returns 19 record(s)
The DNS server responds to ANY queries with 19 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.
low
RP record exposes responsible person
An RP (Responsible Person) record for mi.com reveals contact information: cname-app-com-amsproxy.w.mi-dun.com.. This can be used for social engineering.
💡 Remove the RP record if the contact information is not intended to be public.
low
Non-mail domain correctly publishes SPF -all
This domain has no MX and publishes "v=spf1 -all", preventing spoofing.
pass
No internal information leakage detected
No non-routable IP addresses or internal references were found in public DNS records.
pass
No email autodiscovery endpoints detected
No Microsoft Autodiscover, Mozilla Autoconfig, or email SRV records were found.
pass
6 subdomain(s) discovered for mi.com
Subdomains were enumerated via Certificate Transparency logs, DNS wordlist brute-forcing, and DNS record analysis.
informational
0 certificate(s) found in CT logs
Certificate Transparency logs contain 0 certificate(s) for mi.com and its subdomains. Each certificate reveals subdomain names.
informational
NSEC3 authenticated denial of existence
The domain uses NSEC3 with -1 iteration(s) and salt '-'.
informational
DNSSEC is enabled
DNSKEY and/or DS records are present, indicating DNSSEC is configured.
informational

Reputation Findings

Missing domain locks: clientDeleteProhibited
Domain mi.com is missing protective locks: clientDeleteProhibited.
💡 Enable clientTransferProhibited and clientDeleteProhibited locks through your registrar to prevent unauthorized transfers or deletions.
high
Missing Strict-Transport-Security on mi.com
The Strict-Transport-Security header is not set on https://mi.com.
💡 Add the Strict-Transport-Security header with a max-age of at least 31536000 (1 year) and include the includeSubDomains directive.
medium
Not listed on any DNS blacklists
Domain and MX IPs checked against 55 DNSBLs — no listings found.
pass
security.txt present
Found security.txt at https://mi.com/.well-known/security.txt.
pass
TLS certificate valid for 107 days
Certificate for mi.com expires on 2026-09-12.
pass
Certificate issued by Go Daddy Secure Certificate Authority - G2
The certificate for mi.com is issued by a third-party CA.
pass
Signature algorithm: rsa-sha256
The certificate for mi.com uses an acceptable signature algorithm.
pass
RSA key: 2048 bits
The certificate for mi.com uses an adequate RSA key of 2048 bits.
pass
SCTs present in certificate
The certificate for mi.com contains Signed Certificate Timestamps.
pass
No weak ciphers detected
No known weak cipher suites detected on mi.com.
pass
Domain valid for 2718 days
Domain mi.com expires on 2033-11-05.
pass
No disposable email provider MX records
MX records for mi.com do not match known disposable email provider patterns.
pass
Domain is 10064 days old
Domain mi.com was registered 1998-11-06.
pass
No wildcard MX records
No wildcard MX records detected for mi.com.
pass
TLD has good reputation
The .com TLD is not on known abuse watchlists.
pass
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.
informational
Abuse contacts found for MX IPs
Abuse contact information retrieved via abusix.org DNS lookup.
informational
PhishTank — API key required
PhishTank phishing database check requires an API key.
informational
Sender Score — API key required
Sender Score reputation check requires an API key.
informational
Cisco Talos — API key required
Cisco Talos IP reputation check requires an API key.
informational
Could not connect to webmail.mi.com
HTTPS request to https://webmail.mi.com failed or timed out.
informational
WHOIS registration data
Registrar: Network Solutions, LLC | Created: 1998-11-06 | Expires: 2033-11-05 | Updated: 2026-05-12
informational
WHOIS privacy protection enabled
Domain mi.com has WHOIS privacy/redaction enabled.
informational
Bulletproof Hosting Detection — API key required
Checking IPs against known bulletproof hosting providers requires a threat intelligence API key.
informational
Threat Intelligence Feeds — API key required
Checking domain against threat intelligence feeds requires API keys (e.g., VirusTotal, AbuseIPDB).
informational
Typosquat detected: ni.com (has MX!), ki.com (has MX!), mo.com (has MX!), mmi.com (has MX!), mii.com (has MX!)
19 registered lookalike domain(s) that could be used for phishing against your brand. Showing top 5 of 19. Domains with MX records can send and receive email, making them high-risk phishing vectors.
informational

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: cname-app-com-amsproxy.w.mi-dun.com
PTR record proves mail server legitimacy
MX: cname-app-com-amsproxy.w.mi-dun.com Mail server at 145.190.68.5 PTR Record No PTR record
⚠️ Mail server cname-app-com-amsproxy.w.mi-dun.com (145.190.68.5) lacks a PTR record. Many receiving servers require matching forward and reverse DNS for spam prevention.
Mail Server Reputation: cname-app-com-amsproxy.w.mi-dun.com
RBL check ensures server is not blacklisted
MX: cname-app-com-amsproxy.w.mi-dun.com Mail server at 145.190.68.5 RBL Status Not blacklisted
Enforced Encryption Chain
MTA-STS enforces TLS encryption to prevent man-in-the-middle attacks
TLS Support TLS not verified or unsupported MTA-STS Policy MTA-STS not configured
⚠️ TLS support could not be verified. MTA-STS requires TLS to enforce encrypted connections. Without TLS, MTA-STS cannot function.
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 TLS not verified or unsupported TLS-RPT Reporting TLS-RPT not configured
⚠️ TLS support could not be verified. TLS-RPT reports on TLS connection failures, but without TLS support, there's nothing to monitor. You need working TLS encryption before TLS-RPT can provide value.

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:

mi.com Email Security Grade
<img src="https://scan.ractermx.com/badge/mi.com.svg" alt="Email Security Grade">

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