iweps.be

Delegation · The nameservers at the parent and in the zone should be the same. Only in the zone: ns3.belnet.be. ns1.belnet.be, ns2.belnet.be, ns3.belnet.be, nsmaster.belnet.be report NS ns1.belnet.be ns2.belnet.be ns3.belnet.be nsmaster.belnet.be.

SOA · retry 2h should be shorter than refresh 2h. Current values: refresh 2h, retry 2h, expire 14d, negative TTL 1h.

DNSSEC · NSEC3 uses 1 iteration and a 4-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.

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

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

DMARC · DMARC policy only applies to 5% of failing mail (pct=5). Raise pct to 100 once you are confident in your setup.

DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (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.