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on24.com

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

Domain & DNS

warn

23 passed 4 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: a1-97.akam.net: "41824.11"; a1-97.akam.net: "41824.6"; a12-67.akam.net: "48878.32"; a12-67.akam.net: "48878.29"; a13-64.akam.net: "41824.5"; a13-64.akam.net: "41824.9"; a26-66.akam.net: "48878.31"; a7-64.akam.net: "41824.4"; a8-67.akam.net: "48878.29"; a8-67.akam.net: "48878.33". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 360d should be shorter than refresh 2h; expire 14d must be longer than refresh + retry. Current values: refresh 2h, retry 360d, expire 14d, negative TTL 30m.
    #23
  • !
    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: MX (30s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 10m; resolvers may use either.
    #32

Recent checks

!

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Mail

fail

22 passed 4 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: mxa-0011dd01.gslb.pphosted.com, mxb-0011dd01.gslb.pphosted.com
    #11
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (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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