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tbaer.de

Checked 2026-10-22 00:32 UTC · first added 2026-10-21
✗Problems found Score 71 of 100

Domain & DNS

warn

26 passed 1 warn 0 failed

Areas

iRegistration iDelegation !Nameservers ✓SOA iDNSSEC ✓Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ben.ns.cloudflare.com: "2026.10.2"; lara.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #17

Recent checks

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Full report

Domain & DNS report for tbaer.de ›

Mail

fail

29 passed 2 warn 2 failed

Areas

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

Problems

  • ✗
    Weak DKIM key
    DKIM · RSA keys shorter than 1024 bits can be cracked and are ignored by receivers (RFC 8301): default (768 bits). Rotate to a 2048-bit key.
    #23
  • ✗
    Policy not reachable
    TLS · The MTA-STS record exists but the policy could not be fetched, so senders ignore MTA-STS: https://mta-sts.tbaer.de/.well-known/mta-sts.txt returned HTTP 404.
    #33
  • !
    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 or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #35

Recent checks

✗

Full report

Mail report for tbaer.de ›