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elster.de

Checked 2026-10-21 22:18 UTC · first added 2026-10-21
!Passed with warnings Score 85 of 100

Domain & DNS

warn

28 passed 3 warn 0 failed

Areas

iRegistration ✓Delegation !Nameservers !SOA !DNSSEC ✓Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-214.akam.net: "41824.7"; a1-214.akam.net: "41824.5"; a11-66.akam.net: "41824.7"; a11-66.akam.net: "41824.4"; a3-66.akam.net: "41824.5"; a8-66.akam.net: "48878.32"; a8-66.akam.net: "48878.26". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · refresh 5m is outside 20m–1d; retry 30m should be shorter than refresh 5m. Current values: refresh 5m, retry 30m, expire 14d, negative TTL 5m.
    #23
  • !
    NSEC3 with extra iterations or salt
    DNSSEC · NSEC3 uses 0 iterations and a 8-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Recent checks

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Full report

Domain & DNS report for elster.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
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: fake-mx.elster.de
    #11

Recent checks

!

Full report

Mail report for elster.de ›