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kaapsebrouwers.nl

Checked 2026-10-22 14:01 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

26 passed 3 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation ✓Nameservers !SOA !DNSSEC !Records

Problems

  • !
    Unusual SOA timers
    SOA · retry 1h should be shorter than refresh 1h; negative caching TTL (minimum) 2m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 1h, expire 14d, negative TTL 2m.
    #23
  • !
    NSEC3 with extra iterations or salt
    DNSSEC · NSEC3 uses 1 iteration and a 1-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (2m), MX (2m), NS (2m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 2m; resolvers may use either.
    #32

Recent checks

!

Full report

Domain & DNS report for kaapsebrouwers.nl ›

Mail

fail

25 passed 4 warn 1 failed

Areas

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

Problems

  • ✗
    Policy: none (monitoring only)
    DMARC · DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • !
    Ends with ?all (neutral)
    SPF · SPF record uses ?all (neutral), which gives no protection against unauthorized senders. Use -all or ~all instead.
    #3
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), k1 (1024 bits), s2 (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
  • !
    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 kaapsebrouwers.nl ›