SurfaceMap › o › omroepzeeland.nl

omroepzeeland.nl

Checked 2026-10-21 21:24 UTC · first added 2026-10-21
✗Problems found Score 66 of 100

Domain & DNS

fail

23 passed 3 warn 1 failed

Areas

iRegistration !Delegation ✗Nameservers ✓SOA iDNSSEC !Records

Problems

  • ✗
    Nameservers not responding
    Nameservers · These addresses did not answer, so resolvers waste time on timeouts: ns1.deltazakelijk.nl (2a02:988::8): read udp [2a01:4f8:1c1c:eebf::1]:42291->[2a02:988::8]:53: i/o timeout.
    #14
  • !
    Nameservers in one network
    Delegation · all IPv4 addresses are in 109.109.120.0/24; all IPv6 addresses are in 2a02:988::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.deltazakelijk.nl: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)"; ns2.deltazakelijk.nl: "PowerDNS Authoritative Server 4.8.4 (built Feb 6 2024 20:17:27 by mockbuild@localhost)". Hide or replace the version string.
    #17
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: NS (0s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 0s; resolvers may use either.
    #32

Recent checks

✗

Full report

Domain & DNS report for omroepzeeland.nl ›

Mail

warn

26 passed 5 warn 0 failed

Areas

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

Problems

  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    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
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector2 (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    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 omroepzeeland.nl ›