hccnet.nl

Registration · The root has no DS record for .nl, so DNSSEC for domains under it can't be validated.

Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns1.hobby.nl: "PowerDNS Authoritative Server 5.1.5 (built Oct 7 2026 06:13:02 by root@localhost)"; dns2.hobby.nl: "PowerDNS Authoritative Server 5.1.5 (built Oct 7 2026 06:13:02 by root@localhost)"; dns3.hobby.nl: "PowerDNS Authoritative Server 5.1.5 (built Oct 7 2026 06:13:02 by root@localhost)"; dns4.hobby.nl: "PowerDNS Authoritative Server 5.1.5 (built Oct 7 2026 06:13:02 by root@localhost)". Hide or replace the version string.

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.

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

MX · MX records must point to a host name with A/AAAA records, not to a CNAME: mx.hccnet.nl -> bip-mx.hcced.customer.bit.nl

MX · The PTR name of these addresses does not resolve back to the same address: 2001:7b8:c05::1:25:1 -> mx.hccnet.nl.

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.