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onenote.com

Checked 2026-10-22 10:05 UTC · first added 2026-10-21
✗Problems found Score 66 of 100

Domain & DNS

warn

24 passed 3 warn 0 failed

Areas

iRegistration iDelegation !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: asia1.akam.net: "48878.26"; asia3.akam.net: "48878.29"; eur2.akam.net: "48878.31"; ns1-132.akam.net: "41824.7"; ns1-132.akam.net: "41824.9"; ns1-191.akam.net: "41824.10"; ns1-191.akam.net: "41824.4"; usc4.akam.net: "48878.27"; use9.akam.net: "48878.29"; usw1.akam.net: "41824.8". Hide or replace the version string.
    #17
  • !
    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
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change.
    #32

Recent checks

!

Full report

Domain & DNS report for onenote.com ›

Mail

fail

21 passed 5 warn 1 failed

Areas

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

Problems

  • ✗
    No DKIM keys published
    DKIM · _domainkey.onenote.com does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.
    #7
  • !
    Uses deprecated ptr mechanism
    SPF · The ptr mechanism in SPF records is deprecated due to performance issues and should be avoided.
    #1
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    Report address not authorized
    DMARC · These report addresses are in another domain that has not agreed to receive your reports, so receivers will not send them: mailto:onenotedmarcreports@service.microsoft.com (needs onenote.com._report._dmarc.service.microsoft.com). Ask the report provider to publish the record, or check the address.
    #29
  • !
    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 onenote.com ›