SurfaceMap › r › rsm.nl

rsm.nl

Checked 2026-10-21 21:25 UTC · first added 2026-10-21
!Passed with warnings Score 85 of 100

Domain & DNS

warn

28 passed 1 warn 0 failed

Areas

iRegistration ✓Delegation iNameservers iSOA !DNSSEC ✓Records

Problems

  • !
    NSEC3 with extra iterations or salt
    DNSSEC · NSEC3 uses 10 iterations and a 9-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 rsm.nl ›

Mail

warn

30 passed 4 warn 0 failed

Areas

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

Problems

  • !
    Policy: quarantine
    DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.
    #4
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    Signatures expire in 92h0m0s
    DNSSEC · DNSKEY signatures expire at 2026-10-25T17:25:35Z (in 92h0m0s). Check that re-signing works.
    #21
  • !
    Policy in testing mode
    TLS · With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.
    #33

Recent checks

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Full report

Mail report for rsm.nl ›