SurfaceMap › u › univ-nantes.fr

univ-nantes.fr

Checked 2026-10-22 05:36 UTC · first added 2026-10-21
✗Problems found Score 56 of 100

Domain & DNS

warn

24 passed 2 warn 0 failed

Areas

iRegistration !Delegation iNameservers ✓SOA !DNSSEC ✓Records

Problems

  • !
    NS sets differ
    Delegation · The nameservers at the parent and in the zone should be the same. Only in the zone: ipam-dns2-fr.univ-nantes.fr. dns1.univ-nantes.fr, dns2.univ-nantes.fr, ipam-dns2-fr.univ-nantes.fr, vps-unicaen.unicaen.fr report NS dns1.univ-nantes.fr dns2.univ-nantes.fr ipam-dns2-fr.univ-nantes.fr vps-unicaen.unicaen.fr.
    #7
  • !
    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 univ-nantes.fr ›

Mail

fail

21 passed 6 warn 2 failed

Areas

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

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
  • ✗
    DMARC not strict enough for BIMI
    BIMI · Mail clients will not show the logo. BIMI requires DMARC p=quarantine or p=reject (now p=none), a subdomain policy other than sp=none.
    #39
  • !
    Ends with ?all (neutral)
    SPF · SPF record uses ?all (neutral), which gives no protection against unauthorized senders. Use -all or ~all instead.
    #3
  • !
    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: mx1.relay.renater.fr, mx2.relay.renater.fr
    #11
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), mta (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
  • !
    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

✗

Full report

Mail report for univ-nantes.fr ›