Identity
61
B
betnacional.com.br
Posture Score: 81/100
Scanned May 8, 2026 at 6:47 PM UTC
Attack Surface
91
Reputation
91
Identity Findings
No DKIM records found
No DKIM records were found for any common selector. Email may not be authenticated.
💡 Configure DKIM signing and publish the public key at <selector>._domainkey.betnacional.com.br
MX hostname does not resolve:
The MX hostname has no A or AAAA records.
💡 Ensure the MX hostname resolves to a valid IP address.
No STARTTLS support on
The mail server does not support STARTTLS. All email is transmitted in plaintext.
💡 Enable STARTTLS on the mail server.
No DMARC aggregate report URI (rua=)
Without rua=, you will not receive aggregate reports about authentication results.
💡 Add rua=mailto:dmarc-reports@betnacional.com.br to your DMARC record.
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.betnacional.com.br/.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 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@betnacional.com.br").
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.
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.
DKIM cryptographic configuration is compliant
No RFC 8301 compliance issues detected in DKIM key configuration.
No deprecated DMARCbis tags present
The DMARC record does not use any tags deprecated in DMARCbis (pct, rf, ri).
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.
Mail server port configuration is acceptable
No concerning port exposure detected.
IPv6 readiness is good
IPv6 records are present and properly configured.
FCrDNS checks passed
All MX server IPs have valid forward-confirmed reverse DNS.
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.
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.
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.
RFC 8058 one-click unsubscribe assessment
No DKIM signing detected. RFC 8058 one-click unsubscribe requires DKIM-signed List-Unsubscribe headers.
SOA record parameters
Serial: 2026128750, Refresh: 1800s, Retry: 900s, Expire: 604800s, Min TTL: 900s
Authorized certificate authorities
CAA records restrict certificate issuance to: letsencrypt.org
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.
No NSEC/NSEC3 records found
Neither NSEC nor NSEC3 records were found. Authenticated denial of existence is not configured.
💡 Configure NSEC3 records for authenticated denial of existence while preventing zone enumeration.
DNS ANY query returns 6 record(s)
The DNS server responds to ANY queries with 6 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.
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.
1 subdomain(s) discovered for betnacional.com.br
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 betnacional.com.br and its subdomains. Each certificate reveals subdomain names.
DNSSEC is enabled
DNSKEY and/or DS records are present, indicating DNSSEC is configured.
Reputation Findings
Missing domain locks: clientTransferProhibited, clientDeleteProhibited
Domain betnacional.com.br is missing protective locks: clientTransferProhibited, clientDeleteProhibited.
💡 Enable clientTransferProhibited and clientDeleteProhibited locks through your registrar to prevent unauthorized transfers or deletions.
HSTS enabled but missing preload directive on betnacional.com.br
Strict-Transport-Security: max-age=0
💡 Add the "preload" directive to the HSTS header and submit the domain to hstspreload.org.
security.txt present
Found security.txt at https://betnacional.com.br/.well-known/security.txt.
TLS certificate valid for 57 days
Certificate for betnacional.com.br expires on 2026-07-05.
Certificate issued by E8
The certificate for betnacional.com.br is issued by a third-party CA.
Signature algorithm: ecdsa-with-sha384
The certificate for betnacional.com.br uses an acceptable signature algorithm.
ECC key: 256 bits
The certificate for betnacional.com.br uses an adequate ECC key of 256 bits.
SCTs present in certificate
The certificate for betnacional.com.br contains Signed Certificate Timestamps.
No weak ciphers detected
No known weak cipher suites detected on betnacional.com.br.
Domain valid for 1339 days
Domain betnacional.com.br expires on 2030-01-07.
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.betnacional.com.br
HTTPS request to https://webmail.betnacional.com.br failed or timed out.
WHOIS registration data
Registrar: Unknown | Created: Unknown | Expires: 2030-01-07 | Updated: Unknown
WHOIS privacy protection enabled
Domain betnacional.com.br has WHOIS privacy/redaction enabled.
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: reject
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: reject
⚠️ 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:
PTR record proves mail server legitimacy
MX:
Mail server at
→
PTR Record
No PTR record
⚠️ Mail server () lacks a PTR record. Many receiving servers require matching forward and reverse DNS for spam prevention.
Mail Server Reputation:
RBL check ensures server is not blacklisted
MX:
Mail server at
→
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 policy: reject
→
BIMI Record
BIMI not configured
⚠️ BIMI record is missing. Even with DMARC enforcement, you need to configure BIMI to display your brand logo in supported email clients.
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:
<img src="https://scan.ractermx.com/badge/betnacional.com.br.svg" alt="Email Security Grade">
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