SurfaceMap › z › zeelandnet.nl

zeelandnet.nl

Checked 2026-10-21 21:27 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

25 passed 0 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation iNameservers ✓SOA ✓DNSSEC iRecords

Recent checks

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Full report

Domain & DNS report for zeelandnet.nl ›

Mail

error

21 passed 4 warn 1 failed 3 errors

lookups failed for bimi, mta-sts, tls-rpt; results are incomplete

Areas

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

Problems

  • ✗
    Policy: none (monitoring only)
    DMARC · DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mx1.zeelandnet.nl, mx2.zeelandnet.nl, mx3.zeelandnet.nl, mx4.zeelandnet.nl
    #11
  • !
    No aggregate reports (rua)
    DMARC · DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: s2 (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    Reverse DNS does not match
    MX · The PTR name of these addresses does not resolve back to the same address: 217.102.255.235 -> spamfilter15.delta.nl, 217.102.255.225 -> spamfilter05.delta.nl, 217.102.255.226 -> spamfilter06.delta.nl, 217.102.255.236 -> spamfilter16.delta.nl, 217.102.255.227 -> spamfilter07.delta.nl, 217.102.255.233 -> spamfilter13.delta.nl, 217.102.255.228 -> spamfilter08.delta.nl, 217.102.255.234 -> spamfilter14.delta.nl, 217.102.255.237 -> spamfilter17.delta.nl, 217.102.255.230 -> spamfilter10.delta.nl, 217.102.255.238 -> spamfilter18.delta.nl, 217.102.255.231 -> spamfilter11.delta.nl, 217.102.255.229 -> spamfilter09.delta.nl, 217.102.255.239 -> spamfilter19.delta.nl, 217.102.255.232 -> spamfilter12.delta.nl, 217.102.255.240 -> spamfilter20.delta.nl, 217.102.255.225 -> spamfilter05.delta.nl, 217.102.255.251 -> spamfilter24.delta.nl, 217.102.255.231 -> spamfilter11.delta.nl, 217.102.255.246 -> spamfilter22.delta.nl, 217.102.255.227 -> spamfilter07.delta.nl, 217.102.255.229 -> spamfilter09.delta.nl, 217.102.255.247 -> spamfilter23.delta.nl, 217.102.255.245 -> spamfilter21.delta.nl.
    #30

Recent checks

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Full report

Mail report for zeelandnet.nl ›