SurfaceMap › d › duurzaam-ondernemen.nl

duurzaam-ondernemen.nl

Checked 2026-10-21 21:15 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

27 passed 1 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration ✓Delegation !Nameservers ✓SOA iDNSSEC iRecords

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.greenhost.nl: "Knot DNS 3.6.0"; ns2.greenhost.net: "Knot DNS 3.6.0"; ns3.greenhost.nl: "Knot DNS 3.5.6". Hide or replace the version string.
    #17

Recent checks

!

Full report

Domain & DNS report for duurzaam-ondernemen.nl ›

Mail

fail

22 passed 4 warn 1 failed

Areas

✓SPF ✗DMARC !DKIM ✓DNSSEC ✓MX !TLS iBIMI

Problems

  • ✗
    Policy: none (monitoring only)
    DMARC · DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • !
    No key under common selectors
    DKIM · The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.
    #7
  • !
    No aggregate reports (rua)
    DMARC · DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19
  • !
    Not configured
    TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.
    #32
  • !
    Not configured
    TLS · MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #35

Recent checks

✗

Full report

Mail report for duurzaam-ondernemen.nl ›