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essen.de

Checked 2026-10-21 22:19 UTC · first added 2026-10-21
✗Problems found Score 59 of 100

Domain & DNS

fail

22 passed 2 warn 1 failed

Areas

iRegistration iDelegation ✗Nameservers ✓SOA !DNSSEC iRecords

Problems

  • ✗
    Nameservers not responding
    Nameservers · These addresses did not answer, so resolvers waste time on timeouts: eshdns01.essen.de (2a0b:a5c0:1:20:2::): read udp [2a01:4f8:1c1c:eebf::1]:50544->[2a0b:a5c0:1:20:2::]:53: i/o timeout; eshdns02.essen.de (2a0b:a5c4:1:20:2::): read udp [2a01:4f8:1c1c:eebf::1]:41452->[2a0b:a5c4:1:20:2::]:53: i/o timeout.
    #14
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: eshdns01.essen.de: "9.20.29-1~deb13u1+ubuntu24.04.1+deb.sury.org+1-Ubuntu"; eshdns02.essen.de: "9.20.29-1~deb13u1+ubuntu24.04.1+deb.sury.org+1-Ubuntu"; eshdns03.essen.de: "9.20.29-1~deb13u1+ubuntu22.04.1+deb.sury.org+1-Ubuntu". Hide or replace the version string.
    #17
  • !
    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

✗

Full report

Domain & DNS report for essen.de ›

Mail

fail

19 passed 5 warn 1 failed

Areas

✓SPF ✗DMARC !DKIM !DNSSEC !MX !TLS 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 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
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mx.essen.de
    #11
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    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 essen.de ›