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amsterdam.nl

Checked 2026-10-21 20:45 UTC · first added 2026-10-21
!Passed with warnings Score 82 of 100

Domain & DNS

warn

29 passed 1 warn 0 failed

Areas

iRegistration iDelegation !Nameservers ✓SOA iDNSSEC ✓Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-140.akam.net: "41824.10"; a11-64.akam.net: "41824.10"; a12-67.akam.net: "48878.27"; a26-65.akam.net: "48878.27"; a26-65.akam.net: "48878.30"; a5-65.akam.net: "41824.5"; a6-64.akam.net: "48878.26"; a6-64.akam.net: "48878.30". Hide or replace the version string.
    #17

Recent checks

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Full report

Domain & DNS report for amsterdam.nl ›

Mail

warn

24 passed 5 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
  • !
    No aggregate reports (rua)
    DMARC · DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19
  • !
    Signatures expire in 58h0m0s
    DNSSEC · DNSKEY signatures expire at 2026-10-24T06:32:58Z (in 58h0m0s). Check that re-signing works.
    #21
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: k1 (1024 bits), selector1 (1024 bits), selector2 (1024 bits), s2 (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

Recent checks

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Full report

Mail report for amsterdam.nl ›