kinderombudsman.nl

Checked 22 October 2026, 14:02 UTC · via 8.8.8.8
!Passed with warnings
29 passed 4 warnings 0 failed 2 info

SPF

info

SPF record published

Found

Record
v=spf1 redirect=_scb98eg03.sdmarc.net
DNS lookups
6 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 6 of 10 DNS lookups #2
    SPF record needs 6 DNS lookups (limit is 10).
  • i
    Delegated via redirect
    SPF record has no 'all' mechanism but redirects to _scb98eg03.sdmarc.net, whose policy applies.
    #3
  • ✓ Record published #6
    SPF record exists for this domain.
  • ✓ Single record #16
    Exactly one SPF record is published.
  • ✓ Valid syntax #25
    All SPF mechanisms and modifiers are valid.
  • ✓ No void lookups #26
    All include/redirect targets exist.
  • ✓ No overly broad IP ranges #27
    All ip4/ip6 ranges are narrow enough.

DMARC

pass

p=reject (_dmarc.kinderombudsman.nl)

Found

Record
v=DMARC1; p=reject; rua=mailto:a.cb98eg03@sdmarc.net; adkim=r; aspf=r
Found at
_dmarc.kinderombudsman.nl
External report address
mailto:a.cb98eg03@sdmarc.net (authorized)
TagValueMeaning
vDMARC1Version
prejectPolicy
ruamailto:a.cb98eg03@sdmarc.netAggregate report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)

Checks

  • ✓ Policy: reject #4
    DMARC policy is set to 'reject', which provides the strongest protection against email spoofing.
  • ✓ Record published #5
    DMARC record exists for this domain.
  • ✓ Valid syntax #17
    DMARC record syntax is valid.
  • ✓ Applies to 100% of mail #18
    DMARC policy applies to all failing mail.
  • ✓ Aggregate reports enabled #19
    Aggregate reports are sent to: mailto:a.cb98eg03@sdmarc.net
  • ✓ Subdomain policy: reject #20
    Subdomains are covered by policy 'reject'.
  • ✓ External report addresses authorized #29
    Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: mail, selector1, selector2, s1

Found

Selectors
mail, selector1, selector2, s1
_domainkey
NOERROR
SelectorKeyFlags
mailRSA 2048 bitsh=sha256
selector1RSA 2048 bits
selector2RSA 2048 bits
s1RSA 1024 bits

Checks

  • ✓ Keys found: mail, selector1, selector2, s1 #7
    DKIM keys found for this domain with selectors: mail, selector1, selector2, s1
  • !
    1024-bit DKIM key
    1024-bit RSA keys are the minimum and are considered weak today: s1 (1024 bits). Rotate to a 2048-bit key.
    #23
  • ✓ No problematic flags #24
    No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

warn

Signed, but no DS at parent

Found

DNSKEY records
Yes (2)
DS at parent
No
Algorithms
ECDSAP256SHA256 (13)
Key tags
16747, 3795
Signatures valid until
5 November 2026, 01:20 UTC

Checks

  • !
    Signed, but no DS at parent
    The zone is signed (DNSKEY present) but the parent has no DS record, so the chain of trust is incomplete. Publish the DS record at your registrar.
    #8
  • ✓ Signatures valid until 2026-11-05 #21
    DNSKEY signatures are valid until 2026-11-05T01:20:29Z.

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
0kinderombudsman-nl.v-v1.mx.microsoftA 52.101.68.25 A 52.101.73.123 A 52.101.68.29 A 52.101.103.162 AAAA 2a01:111:f403:ca04::d AAAA 2a01:111:f403:ca04::e AAAA 2a01:111:f403:ca09::28 AAAA 2a01:111:f403:ca21::email-db8pr02cu00101.inbound.protection.outlook.com ✓ mail-am6pr02cu00203.inbound.protection.outlook.com ✓ mail-dbapr03cu00105.inbound.protection.outlook.com ✓ mail-miypr03cu00202.inbound.protection.outlook.com ✓ mail-db6pr03cu00105.inbound.protection.outlook.com ✓ mail-db8pr02cu00106.inbound.protection.outlook.com ✓ mail-am6pr02cu00300.inbound.protection.outlook.com ✓ mail-matpr04cu00306.inbound.protection.outlook.com ✓

Checks

  • ✓ 1 MX record #9
    Found 1 MX records for this domain.
  • ✓ All hosts resolve #10
    All MX records resolve to valid IP addresses.
  • ✓ All hosts have IPv6 #11
    All MX records resolve to IPv6 addresses.
  • !
    Single MX host, no backup
    Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • ✓ At most 5 MX records #13
    Found 1 MX records, which is within the recommended range (1-5).
  • ✓ No localhost targets #14
    No MX records pointing to localhost found.
  • ✓ No private IP addresses #15
    No MX records resolving to private IP addresses found.
  • ✓ No CNAME targets #22
    No MX records point to a CNAME.
  • ✓ Reverse DNS confirmed #30
    All 8 MX addresss have a PTR record that resolves back to them.

TLS

warn

MTA-STS testing · TLS-RPT · DANE on 1 of 1 MX hosts

Found

MTA-STS record
v=STSv1; id=1764324640
Policy URL
https://mta-sts.kinderombudsman.nl/.well-known/mta-sts.txt
Mode
testing
Allowed MX
kinderombudsman-nl.v-v1.mx.microsoft
Max age
604800 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:reports@sendmarc.net

DANE (TLSA records)

MX hostTLSADNSSEC
kinderombudsman-nl.v-v1.mx.microsoft3 1 1 54883cc5f1849331… 3 1 1 cfd68bde4129c00a… 2 0 1 c1ad7778796d20bc… 3 1 1 803f7447cc75b208… 2 0 1 ea7a25255d111fc3…Yes

Checks

  • ✓ Record published #32
    MTA-STS record found with id 1764324640.
  • !
    Policy in testing mode
    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
  • ✓ All MX hosts covered #34
    Every MX host matches an mx: line of the MTA-STS policy.
  • ✓ Reports enabled #35
    TLS reports are sent to: mailto:reports@sendmarc.net
  • ✓ DANE on all MX hosts #36
    All 1 MX host publish DNSSEC-validated TLSA records.

BIMI

info

No BIMI record

Checks

  • i
    Not configured
    BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.
    #38