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spdns.de

Checked 2026-10-22 00:23 UTC · first added 2026-10-21
✗Problems found Score 52 of 100

Domain & DNS

warn

21 passed 4 warn 0 failed

Areas

iRegistration iDelegation !Nameservers !SOA !DNSSEC iRecords

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns-001.securepoint.de: "Knot DNS 3.6.1"; dyndns.securepoint.de: "Knot DNS 2.8.1". Hide or replace the version string.
    #17
  • !
    Serials differ
    SOA · The nameservers serve different versions of the zone: 1484246776 on ns2.m-online.net (212.18.3.8); 1484246777 on ns4.m-online.net (212.114.171.64), ns4.m-online.net (2001:a60:0:20::53); 1484246778 on ns1.m-online.net (212.18.0.8), ns1.m-online.net (2001:a60:0:11::53); 1484246779 on ns3.m-online.net (217.160.41.67), ns3.m-online.net (2001:8d8:1801:8039::1); 1484246794 on dns-001.securepoint.de (85.236.63.190), dyndns.securepoint.de (195.4.152.238). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    Unusual SOA timers
    SOA · refresh 3m is outside 20m–1d; retry 3m should be shorter than refresh 3m; negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 3m, retry 3m, expire 7d, negative TTL 3m.
    #23
  • !
    Not signed
    DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Recent checks

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Mail

fail

4 passed 2 warn 3 failed

Areas

✗SPF ✗DMARC ✗DKIM !DNSSEC !MX 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 SPF record
    SPF · No SPF record was found for this domain. SPF is important for preventing email spoofing. Add an SPF record to specify which servers are authorized to send email for your domain.
    #6
  • ✗
    No DKIM keys published
    DKIM · _domainkey.spdns.de does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    No MX records
    MX · No MX records found. If this domain is used for email, add MX records to specify mail servers. If it never receives mail, publish a null MX ("MX 0 .").
    #9

Recent checks

✗

Full report

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