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welke.nl

Checked 2026-10-22 17:11 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

25 passed 2 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation !Nameservers ✓SOA !DNSSEC iRecords

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.openprovider.nl: "2026.10.8"; ns2.openprovider.be: "2026.10.8"; ns3.openprovider.eu: "2026.10.8". Hide or replace the version string.
    #17
  • !
    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

Recent checks

!

Full report

Domain & DNS report for welke.nl ›

Mail

warn

27 passed 3 warn 0 failed

Areas

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

Problems

  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    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:matthijs+dmarc@cacholong.nl (needs welke.nl._report._dmarc.cacholong.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

Recent checks

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Full report

Mail report for welke.nl ›