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opsolder.nl

Checked 2026-10-22 15:02 UTC · first added 2026-10-21

!Check could not complete

Domain & DNS

error

23 passed 2 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration !Delegation iNameservers ✓SOA !DNSSEC iRecords

Problems

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NS sets differ

Delegation · The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.combell.eu, ns3.combell.net, ns4.combell.net; only in the zone: ns1.european-server.eu, ns3.european-server.com, ns4.european-server.com. ns1.combell.eu, ns1.european-server.eu, ns3.combell.net, ns3.european-server.com, ns4.combell.net, ns4.european-server.com report NS ns1.european-server.eu ns3.european-server.com ns4.european-server.com.

#7
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Not signed

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.

#27

Recent checks

!

Full report

Domain & DNS report for opsolder.nl ›

Mail

fail

24 passed 4 warn 1 failed

Areas

✗SPF ✓DMARC !DKIM !DNSSEC !MX !TLS iBIMI

Problems

✗

Multiple SPF records

SPF · Found 3 SPF records. Publishing more than one v=spf1 record causes a permerror; merge them into a single record.

#16
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Not enabled

DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8
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Hosts without IPv6

MX · The following MX hosts could not be resolved to IPv6 addresses: mx.mailprotect.be, mx.backup.mailprotect.be

#11
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1024-bit DKIM key

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

#23
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Not configured

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.

#32

Recent checks

✗

Full report

Mail report for opsolder.nl ›