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zn.nl

Checked 2026-10-22 17:30 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

28 passed 0 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation ✓Nameservers ✓SOA iDNSSEC iRecords

Recent checks

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Full report

Domain & DNS report for zn.nl ›

Mail

warn

28 passed 4 warn 0 failed

Areas

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

Problems

  • !
    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
  • !
    Report address not authorized
    DMARC · These report addresses are in another domain that has not agreed to receive your reports, so receivers will not send them: mailto:dmarc@dmarcrep.darestep.nl (needs zn.nl._report._dmarc.dmarcrep.darestep.nl). Ask the report provider to publish the record, or check the address.
    #29
  • !
    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

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