monbureaunumerique.fr

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: b.dns.nfrance.com: "9.18.49-1~deb12u2-Debian"; c.dns.nfrance.com: "9.18.29". 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.

SPF · SPF record needs 7 DNS lookups (limit is 10). Problems found: include:_spf.ac-reims.fr does not exist or has no records.

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: kdecole-mx.nfrance.com

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

SPF · 1 include/redirect target does not exist or has no records (limit is 2). This usually is a stale include; remove it.

MX · The PTR name of these addresses does not resolve back to the same address: 80.247.224.250 -> cg42-new-prod.nfrance.com, 80.247.224.251 -> cg42-new-prod.nfrance.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.