agroparistech.fr

Delegation · None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: galatee.agroparistech.fr: "PowerDNS Authoritative Server 4.9.1 (built Aug 21 2024 18:52:07 by root@133amd64-quarterly-job-01)"; nereide.agroparistech.fr: "PowerDNS Authoritative Server 4.9.1 (built Aug 21 2024 18:52:07 by root@133amd64-quarterly-job-01)". Hide or replace the version string.

SOA · refresh 5m is outside 20m–1d; retry 2h should be shorter than refresh 5m. Current values: refresh 5m, retry 2h, expire 30d, negative TTL 1d.

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: MX (10s). 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.

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: mx1.relay.renater.fr, mx2.relay.renater.fr

DKIM · 1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), s2 (1024 bits). Rotate to a 2048-bit key.

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.