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trimble.com

Name: trimble.com Email Security Posture Assessment
Creator: RacterMX

Posture Score: 79/100

Scanned May 18, 2026 at 4:28 AM UTC

Identity

Attack Surface

Reputation

Identity Findings

Open recursion on nameserver: ns-1653.awsdns-14.co.uk

The nameserver ns-1653.awsdns-14.co.uk allows recursive queries from external sources, making it vulnerable to DNS amplification attacks.

💡 Disable recursion on ns-1653.awsdns-14.co.uk or restrict it to trusted networks only.

critical

Weak DKIM RSA key (~1296 bits) for selector 'default'

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.

high

Weak DKIM RSA key (~1296 bits) for selector 'google'

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.

high

Weak DKIM RSA key (~1296 bits) for selector 'mail'

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.

high

Weak DKIM RSA key (~1296 bits) for selector 'k1'

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.

high

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

MTA-STS is in testing mode

The MTA-STS policy is in testing mode and not actively enforcing TLS.

💡 Switch mode to "enforce" once TLS is confirmed working for all MX hosts.

low

Very low TTL on MX records: 266s

5 MX records have a TTL of 266s or less (below 300s).

💡 Increase the TTL to at least 300 seconds unless frequent changes are expected.

low

Very low TTL on DMARC record: 266s

The DMARC record has a TTL of 266s or less (below 300s).

💡 Increase the TTL to at least 300 seconds unless frequent changes are expected.

low

SPF record is valid

The SPF record is properly configured with valid syntax and within lookup limits.

pass

SPF record length OK (43 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

DKIM key strength indicates modern key management

All DKIM keys use RSA-2048+ or Ed25519, consistent with current best practices.

pass

All external report destinations authorized

External DMARC report destinations have valid authorization records per RFC 7489 §7.1.

pass

Subdomains protected (sp=reject)

DMARC subdomain policy enforces quarantine or reject on unauthenticated subdomain mail.

pass

No deprecated DMARCbis tags present

The DMARC record does not use any tags deprecated in DMARCbis (pct, rf, ri).

pass

TLS-RPT report destinations are reachable

All TLS-RPT rua= URIs point to resolvable domains.

pass

ARC support likely available

MX server software appears to support ARC headers for authentication preservation.

pass

Meets bulk sender authentication requirements

Domain has SPF, DKIM, and DMARC — meeting Google/Yahoo 2024 bulk sender requirements for email authentication.

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

IPv6 readiness is good

IPv6 records are present and properly configured.

pass

STARTTLS downgrade resistance is adequate

STARTTLS is supported with modern TLS and protected by MTA-STS and/or DANE.

pass

DNS responses are consistent across all nameservers

All authoritative nameservers return consistent answers with proper AA flags.

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

DMARC alignment: adkim=r, aspf=r

DKIM alignment is relaxed, SPF alignment is relaxed.

informational

DMARC failure reporting: fo=1

Failure reports generated when any authentication mechanism fails.

informational

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.

informational

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.

informational

Shared/free email hosting detected: aspmx.l.google.com

The MX record points to a known shared or free email hosting provider.

informational

Shared/free email hosting detected: alt1.aspmx.l.google.com

The MX record points to a known shared or free email hosting provider.

informational

Shared/free email hosting detected: alt2.aspmx.l.google.com

The MX record points to a known shared or free email hosting provider.

informational

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.

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

Open mail ports on aspmx.l.google.com

Detected open mail-related ports: 25

informational

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.

informational

MX IP network diversity

MX IPs span 3 different /16 networks, providing good diversity.

informational

SOA record parameters

Serial: 1, Refresh: 7200s, Retry: 900s, Expire: 1209600s, Min TTL: 86400s

informational

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.

medium

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.

medium

All MX records resolve correctly

No dangling MX records detected — all MX hostnames resolve to valid IP addresses.

pass

Explicit MX records present

The domain has explicit MX records — no implicit A-record fallback delivery.

pass

No internal information leakage detected

No non-routable IP addresses or internal references were found in public DNS records.

pass

No excessive DNS information exposure detected

No HINFO, LOC, RP records, version disclosures, or zone walking vulnerabilities were found.

pass

7 subdomain(s) discovered for trimble.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 trimble.com and its subdomains. Each certificate reveals subdomain names.

informational

1 email SRV record(s) found

Email service SRV records expose mail server configuration for automatic client setup.

informational

Reputation Findings

HSTS enabled but missing preload directive on trimble.com

Strict-Transport-Security: max-age=31536000

💡 Add the "preload" directive to the HSTS header and submit the domain to hstspreload.org.

low

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://trimble.com/.well-known/security.txt.

pass

TLS certificate valid for 35 days

Certificate for trimble.com expires on 2026-06-22.

pass

Certificate issued by E8

The certificate for trimble.com is issued by a third-party CA.

pass

Signature algorithm: ecdsa-with-sha384

The certificate for trimble.com uses an acceptable signature algorithm.

pass

ECC key: 256 bits

The certificate for trimble.com uses an adequate ECC key of 256 bits.

pass

SCTs present in certificate

The certificate for trimble.com contains Signed Certificate Timestamps.

pass

No weak ciphers detected

No known weak cipher suites detected on trimble.com.

pass

No disposable email provider MX records

MX records for trimble.com do not match known disposable email provider patterns.

pass

No wildcard MX records

No wildcard MX records detected for trimble.com.

pass

TLD has good reputation

The .com TLD is not on known abuse watchlists.

pass

DMARC reporting destinations look legitimate

DMARC rua/ruf addresses do not point to known URL shortener services.

pass

MX records point to stable infrastructure

No MX records point to known dynamic DNS service domains.

pass

Strong TLS configuration on primary MX

Primary MX (aspmx.l.google.com) uses TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 including Forward Secrecy.

pass

SMTP banner from hosted mail provider

The MX (aspmx.l.google.com) is a hosted mail service. Banner alignment is managed by the provider and not actionable by the domain owner.

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.trimble.com

HTTPS request to https://webmail.trimble.com failed or timed out.

informational

WHOIS lookup failed

Could not retrieve WHOIS data for trimble.com.

informational

Could not determine domain age

WHOIS creation date could not be parsed for trimble.com.

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: trible.com (has MX!), trimbl.com (has MX!), grimble.com (has MX!), frimble.com (has MX!), trumble.com (has MX!)

9 registered lookalike domain(s) that could be used for phishing against your brand. Showing top 5 of 9. 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 configured → DMARC Policy DMARC policy missing

⚠️ DMARC policy is missing. Even with DKIM configured, you lack the policy layer that tells receiving servers what to do with authentication failures.

Mail Server Identity: aspmx.l.google.com

PTR record proves mail server legitimacy

MX: aspmx.l.google.com Mail server at 209.85.202.27 → PTR Record Reverse DNS: dg-in-f27.1e100.net

Mail Server Identity: aspmx2.googlemail.com

PTR record proves mail server legitimacy

MX: aspmx2.googlemail.com Mail server at 173.194.76.26 → PTR Record Reverse DNS: ws-in-f26.1e100.net

Mail Server Identity: aspmx3.googlemail.com

PTR record proves mail server legitimacy

MX: aspmx3.googlemail.com Mail server at 142.250.102.26 → PTR Record Reverse DNS: rb-in-f26.1e100.net

Mail Server Identity: alt1.aspmx.l.google.com

PTR record proves mail server legitimacy

MX: alt1.aspmx.l.google.com Mail server at 173.194.76.26 → PTR Record Reverse DNS: ws-in-f26.1e100.net

Mail Server Identity: alt2.aspmx.l.google.com

PTR record proves mail server legitimacy

MX: alt2.aspmx.l.google.com Mail server at 142.250.102.27 → PTR Record Reverse DNS: rb-in-f27.1e100.net

Mail Server Reputation: aspmx.l.google.com