SurfaceMap › g › gdata.de

gdata.de

Checked 2026-10-21 22:32 UTC · first added 2026-10-21
✗Problems found Score 54 of 100

Domain & DNS

warn

18 passed 5 warn 0 failed

Areas

iRegistration !Delegation !Nameservers !SOA !DNSSEC iRecords

Problems

  • !
    Glue differs from the zone
    Delegation · The addresses at the parent (glue) differ from the addresses in the zone: ns1.gdata.de (glue 92.205.27.67, zone 46.224.32.176). Update the glue at your registrar.
    #8
  • !
    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.gdata.de: "9.18.39-0ubuntu0.22.04.7-Ubuntu". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · refresh 3m20s is outside 20m–1d; retry 3m20s should be shorter than refresh 3m20s; expire 3m20s is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 3m20s must be longer than refresh + retry; negative caching TTL (minimum) 3m20s is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 3m20s, retry 3m20s, expire 3m20s, negative TTL 3m20s.
    #23
  • !
    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 gdata.de ›

Mail

fail

23 passed 7 warn 1 failed

Areas

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

Problems

  • ✗
    DMARC not strict enough for BIMI
    BIMI · Mail clients will not show the logo. BIMI requires a subdomain policy other than sp=none.
    #39
  • !
    Policy: quarantine
    DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.
    #4
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    Subdomains unprotected (sp=none)
    DMARC · DMARC subdomain policy is sp=none, so spoofed mail from subdomains is not blocked. Consider sp=quarantine or sp=reject.
    #20
  • !
    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
  • !
    No certificate (a=)
    BIMI · The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.
    #38

Recent checks

✗

Full report

Mail report for gdata.de ›