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cultureelerfgoed.nl

Checked 2026-10-21 21:00 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

29 passed 1 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration ✓Delegation iNameservers !SOA ✓DNSSEC ✓Records

Problems

  • !
    Unusual SOA timers
    SOA · expire 2d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 4h, retry 1h, expire 2d, negative TTL 1d.
    #23

Recent checks

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Full report

Domain & DNS report for cultureelerfgoed.nl ›

Mail

warn

28 passed 5 warn 0 failed

Areas

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

Problems

  • !
    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
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (1024 bits), selector2 (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
  • !
    No certificate (a=)
    BIMI · The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.
    #38

Recent checks

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Full report

Mail report for cultureelerfgoed.nl ›