chu-nimes.fr

Delegation · The nameservers at the parent and in the zone should be the same. Only at the parent: panoramix.rap.prd.fr; only in the zone: ns2.netiwan.fr. ns.chu-nimes.fr, ns2.netiwan.fr report NS ns.chu-nimes.fr ns2.netiwan.fr.

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns.chu-nimes.fr: "9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6". Hide or replace the version string.

SOA · refresh 1m is outside 20m–1d; retry 15m should be shorter than refresh 1m. Current values: refresh 1m, retry 15m, expire 7d, negative TTL 3h.

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.

Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1d; resolvers may use either.

DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

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: mail.chu-nimes.fr

MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.

DMARC · DMARC subdomain policy is sp=none, so spoofed mail from subdomains is not blocked. Consider sp=quarantine or sp=reject.

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.