SurfaceMap › j › jacobs-university.de

jacobs-university.de

Checked 2026-10-21 23:01 UTC · first added 2026-10-21
✗Problems found Score 53 of 100

Domain & DNS

fail

17 passed 4 warn 1 failed

Areas

iRegistration !Delegation ✗Nameservers !SOA !DNSSEC iRecords

Problems

  • ✗
    Zone transfer allowed
    Nameservers · These nameservers send the complete zone to anyone who asks (AXFR), exposing all host names: www.jacobs-utils.de (81.169.212.166): 520 records. Restrict zone transfers to your secondary servers.
    #18
  • !
    NS sets differ
    Delegation · The nameservers at the parent and in the zone should be the same. Only in the zone: ns-02.briteline.de. dns.iu-bremen.de, ns-02.briteline.de, www.jacobs-utils.de report NS dns.iu-bremen.de ns-02.briteline.de www.jacobs-utils.de.
    #7
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns.iu-bremen.de: "9.18.39-0ubuntu0.24.04.8-Ubuntu"; www.jacobs-utils.de: "9.9.6-P1". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1d, retry 2h, expire 7d, negative TTL 1m.
    #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 jacobs-university.de ›

Mail

fail

15 passed 5 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
  • !
    2 of 10 DNS lookups, with problems
    SPF · SPF record needs 2 DNS lookups (limit is 10). Problems found: include:askadmissionsmail.co.uk could not be resolved: DNS query for askadmissionsmail.co.uk returned SERVFAIL.
    #2
  • !
    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
  • !
    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 jacobs-university.de ›