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boom.nl

Checked 2026-10-21 21:00 UTC · first added 2026-10-21

!Check could not complete

Domain & DNS

error

28 passed 1 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation ✓Nameservers ✓SOA !DNSSEC iRecords

Problems

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NSEC3 with extra iterations or salt

DNSSEC · NSEC3 uses 0 iterations and a 8-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.

#31

Recent checks

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Full report

Domain & DNS report for boom.nl ›

Mail

warn

27 passed 3 warn 0 failed

Areas

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

Problems

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Single MX host, no backup

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

#12
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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

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Full report

Mail report for boom.nl ›