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ptb.de

Checked 2026-10-21 23:51 UTC · first added 2026-10-21
!Passed with warnings Score 76 of 100

Domain & DNS

warn

25 passed 3 warn 0 failed

Areas

iRegistration iDelegation !Nameservers !SOA !DNSSEC ✓Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.ptb.de: "9.11.22". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 1h should be shorter than refresh 20m. Current values: refresh 20m, retry 1h, expire 7d, negative TTL 1d.
    #23
  • !
    Signatures expire soon
    DNSSEC · The earliest signature expires at 2026-10-26 01:16 UTC (in 97h0m0s). Check that automatic re-signing works.
    #30

Recent checks

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Full report

Domain & DNS report for ptb.de ›

Mail

warn

26 passed 5 warn 0 failed

Areas

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

Problems

  • !
    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
  • !
    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
  • !
    Signatures expire in 97h0m0s
    DNSSEC · DNSKEY signatures expire at 2026-10-26T01:16:11Z (in 97h0m0s). Check that re-signing works.
    #21
  • !
    Policy in testing mode
    TLS · With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.
    #33
  • !
    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

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Full report

Mail report for ptb.de ›