projet-voltaire.fr

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: gerald.ns.cloudflare.com: "2026.10.2"; lisa.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.

DNSSEC · The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.

DNSSEC · The zone is signed (DNSKEY present) but the parent has no DS record, so the chain of trust is incomplete. Publish the DS record at your registrar.

MX · The following MX hosts could not be resolved to IPv6 addresses: mx-mibc-fr-10.mailinblack.com

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

DMARC · DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...

DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (1024 bits). Rotate to a 2048-bit key.

MX · These MX addresses have no PTR record, which many receivers treat as a spam signal: 20.216.139.123 (mx-mibc-fr-10.mailinblack.com). Ask your hosting provider to set one.

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.