SurfaceMap › s › surfnet.nl

surfnet.nl

Checked 2026-10-21 21:25 UTC · first added 2026-10-21
!Passed with warnings Score 85 of 100

Domain & DNS

warn

31 passed 1 warn 0 failed

Areas

iRegistration ✓Delegation !Nameservers ✓SOA ✓DNSSEC ✓Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns0.ja.net: "9.20.29". Hide or replace the version string.
    #17

Recent checks

!

Full report

Domain & DNS report for surfnet.nl ›

Mail

warn

26 passed 4 warn 0 failed

Areas

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

Problems

  • !
    Policy: quarantine
    DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.
    #4
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: surfnet-nl.mail.protection.outlook.com
    #11
  • !
    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 surfnet.nl ›