univ-ag.fr

SOA · negative caching TTL (minimum) 2d is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 16h, retry 2h, expire 1000h, negative TTL 2d.

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.

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

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: mxa.relay.renater.fr, mxb.relay.renater.fr, mxc.relay.renater.fr, mxd.relay.renater.fr

DKIM · These keys could not be parsed, so signatures made with them will fail: mail (RSA public key could not be parsed).

DMARC · These report addresses are in another domain that has not agreed to receive your reports, so receivers will not send them: mailto:dsin-dmarc@univ-antilles.fr (needs univ-ag.fr._report._dmarc.univ-antilles.fr). Ask the report provider to publish the record, or check the address.

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.