SurfaceMap › e › elk-wue.de

elk-wue.de

Checked 2026-10-21 22:18 UTC · first added 2026-10-21
✗Problems found Score 72 of 100

Domain & DNS

warn

23 passed 3 warn 0 failed

Areas

iRegistration !Delegation !Nameservers ✓SOA iDNSSEC iRecords

Problems

  • !
    NS sets differ
    Delegation · The nameservers at the parent and in the zone should be the same. Only in the zone: ns3.elk-wue.de, ns4.elk-wue.de. ns1.elk-wue.de, ns2.elk-wue.de, ns3.elk-wue.de, ns4.elk-wue.de report NS ns1.elk-wue.de ns2.elk-wue.de ns3.elk-wue.de ns4.elk-wue.de.
    #7
  • !
    Nameservers in one network
    Delegation · all IPv4 addresses are in 194.59.169.0/24; all IPv6 addresses are in 2001:67c:5ec::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.elk-wue.de: "9.16.48-Ubuntu"; ns2.elk-wue.de: "9.16.48-Ubuntu"; ns3.elk-wue.de: "9.16.48-Ubuntu"; ns4.elk-wue.de: "9.16.48-Ubuntu". Hide or replace the version string.
    #17

Recent checks

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Full report

Domain & DNS report for elk-wue.de ›

Mail

fail

20 passed 3 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
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (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 elk-wue.de ›