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heuking.de

Checked 2026-10-21 22:50 UTC · first added 2026-10-21
!Passed with warnings Score 91 of 100

Domain & DNS

warn

28 passed 1 warn 0 failed

Areas

iRegistration ✓Delegation iNameservers ✓SOA !DNSSEC iRecords

Problems

  • !
    NSEC3 with extra iterations or salt
    DNSSEC · NSEC3 uses 21 iterations and a 24-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

!

Full report

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Mail

warn

28 passed 2 warn 0 failed

Areas

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

Problems

  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mxa-00351101.gslb.pphosted.com, mxb-00351101.gslb.pphosted.com
    #11
  • !
    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 heuking.de ›