SurfaceMap › c › coburg.de

coburg.de

Checked 2026-10-21 22:10 UTC · first added 2026-10-21
✗Problems found Score 63 of 100

Domain & DNS

warn

20 passed 3 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: dns1.dacor.de (glue 217.24.56.38, 2a00:9d80:9000:6::1, zone 217.24.56.37, 2a00:9d80:9000:6::1). Update the glue at your registrar.
    #8
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns1.dacor.de: "PowerDNS Authoritative Server 4.8.2 (built Sep 7 2023 07:27:46 by root@localhost)"; dns1.dacor.de: "PowerDNS Authoritative Server 4.3.0-alpha1.70.master.ga9d432dc0 (built Jan 7 2020 19:25:58 by root@047221da0342)"; dns2.dacor.de: "PowerDNS Authoritative Server 4.3.0-alpha1.70.master.ga9d432dc0 (built Jan 7 2020 19:25:58 by root@047221da0342)"; dns3.dacor.de: "PowerDNS Authoritative Server 4.8.2 (built Sep 7 2023 07:27:46 by root@localhost)"; dns3.dacor.de: "PowerDNS Authoritative Server 4.3.0-alpha1.70.master.ga9d432dc0 (built Jan 7 2020 19:25:58 by root@047221da0342)". 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

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Full report

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Mail

fail

19 passed 6 warn 1 failed

Areas

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

Problems

  • ✗
    No DKIM keys published
    DKIM · _domainkey.coburg.de does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • !
    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
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mail.coburg.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
  • !
    No aggregate reports (rua)
    DMARC · DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19
  • !
    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

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Full report

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