SurfaceMap › d › dkrz.de

dkrz.de

Checked 2026-10-21 22:14 UTC · first added 2026-10-21
✗Problems found Score 78 of 100

Domain & DNS

warn

26 passed 2 warn 0 failed

Areas

iRegistration iDelegation !Nameservers !SOA iDNSSEC ✓Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.dkrz.de: "9.16.23-RH"; ns2.dkrz.de: "9.16.23-RH". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · refresh 2d is outside 20m–1d. Current values: refresh 2d, retry 2h, expire 14d, negative TTL 2h.
    #23

Recent checks

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Full report

Domain & DNS report for dkrz.de ›

Mail

fail

21 passed 2 warn 1 failed

Areas

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

Problems

  • ✗
    No DMARC record
    DMARC · No DMARC record was found for this domain. DMARC is essential for preventing email spoofing. Add a DMARC record with p=reject or at least p=quarantine.
    #5
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: default (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

Recent checks

✗

Full report

Mail report for dkrz.de ›