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ville-cachan.fr

Checked 2026-10-22 05:45 UTC · first added 2026-10-21
✗Problems found Score 62 of 100

Domain & DNS

fail

26 passed 1 warn 1 failed

Areas

iRegistration ✓Delegation ✗Nameservers ✓SOA !DNSSEC iRecords

Problems

  • ✗
    No DNS over TCP
    Nameservers · DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns2.observatoiredesmarques.fr (188.122.87.39): EOF; ns2.observatoiredesmarques.fr (2a00:1630:210:3::39): EOF.
    #19
  • !
    Not signed
    DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Recent checks

✗

Full report

Domain & DNS report for ville-cachan.fr ›

Mail

fail

21 passed 5 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
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mx-mibc-fr-11.mailinblack.com, mx-mibc-fr-11.mailinblack.com
    #11
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), selector1 (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    Addresses without reverse DNS
    MX · These MX addresses have no PTR record, which many receivers treat as a spam signal: 4.176.17.204 (mx-mibc-fr-11.mailinblack.com), 4.176.17.204 (mx-mibc-fr-11.mailinblack.com). Ask your hosting provider to set one.
    #30
  • !
    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 ville-cachan.fr ›