SurfaceMap › u › uitzinnig.nl

uitzinnig.nl

Checked 2026-10-22 16:41 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

23 passed 3 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration !Delegation !Nameservers !SOA iDNSSEC iRecords

Problems

  • !
    Nameservers in one network
    Delegation · all IPv4 addresses are in 185.33.117.0/24; all IPv6 addresses are in 2a00:cc20:1::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns25.csv-networks.nl: "9.11.36-RedHat-9.11.36-16.el8_10.14"; ns26.csv-networks.nl: "9.11.36-RedHat-9.11.36-16.el8_10.14". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 14d, negative TTL 30m.
    #23

Recent checks

!

Full report

Domain & DNS report for uitzinnig.nl ›

Mail

fail

22 passed 3 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
  • !
    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
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    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

✗

Full report

Mail report for uitzinnig.nl ›