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freeshell.de

Checked 2026-10-21 22:31 UTC · first added 2026-10-21
!Passed with warnings Score 85 of 100

Domain & DNS

warn

25 passed 3 warn 0 failed

Areas

iRegistration !Delegation !Nameservers !SOA iDNSSEC iRecords

Problems

  • !
    No IPv6
    Delegation · None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns2.nic-nac-project.de: "9.18.39-0ubuntu0.24.04.8-Ubuntu"; ns3.nic-nac-project.de: "9.18.39-0ubuntu0.24.04.8-Ubuntu". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 1h should be shorter than refresh 1h; negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 1h, expire 7d, negative TTL 1m.
    #23

Recent checks

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Full report

Domain & DNS report for freeshell.de ›

Mail

warn

30 passed 2 warn 0 failed

Areas

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

Problems

  • !
    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
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12

Recent checks

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Full report

Mail report for freeshell.de ›