northerntool.com

Delegation · The nameservers at the parent and in the zone should be the same. Only in the zone: ns1.northerntool.com, ns2.northerntool.com, ns3.northerntool.com. a.ns.northerntool.com, b.ns.northerntool.com, ns1.northerntool.com, ns2.northerntool.com, ns3.northerntool.com report NS a.ns.northerntool.com b.ns.northerntool.com ns1.northerntool.com ns2.northerntool.com ns3.northerntool.com.

Delegation · The addresses at the parent (glue) differ from the addresses in the zone: a.ns.northerntool.com (glue 162.159.3.49, zone 162.159.3.49, 2400:cb00:2049:1::a29f:331); b.ns.northerntool.com (glue 162.159.4.24, zone 162.159.4.24, 2400:cb00:2049:1::a29f:418). Update the glue at your registrar.

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a.ns.northerntool.com: "2026.10.2"; b.ns.northerntool.com: "2026.10.2"; ns1.northerntool.com: "2026.10.2"; ns2.northerntool.com: "2026.10.2"; ns3.northerntool.com: "2026.10.2". Hide or replace the version string.

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.

DKIM · The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.

DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

MX · The following MX hosts could not be resolved to IPv6 addresses: us-smtp-inbound-1.mimecast.com, us-smtp-inbound-2.mimecast.com

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.