Mail domain report: kinderpostzegels.nl

SPF

pass

SPF record published

Found

Record: v=spf1 a mx include:_spf.exsilia.net include:spf.pepperfield.eu include:spf.protection.outlook.com include:shops.shopify.com include:mail.zendesk.com ~all
DNS lookups: 7 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✓ 7 of 10 DNS lookups #2

SPF record needs 7 DNS lookups (limit is 10).
✓ Ends with ~all #3

SPF record properly uses ~all to restrict unauthorized senders.
✓ 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

fail

p=none (_dmarc.kinderpostzegels.nl)

Found

Record: v=DMARC1; p=none; rua=mailto:a0a53fce@in.mailhardener.com,mailto:0eb7e8adc1744dc693a8a309dcef81b9@dmarc-reports.cloudflare.net
Found at: _dmarc.kinderpostzegels.nl
External report address: mailto:a0a53fce@in.mailhardener.com (authorized)
External report address: mailto:0eb7e8adc1744dc693a8a309dcef81b9@dmarc-reports.cloudflare.net (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
rua	mailto:a0a53fce@in.mailhardener.com,mailto:0eb7e8adc1744dc693a8a309dcef81b9@dmarc-reports.cloudflare.net	Aggregate report addresses

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:a0a53fce@in.mailhardener.com, mailto:0eb7e8adc1744dc693a8a309dcef81b9@dmarc-reports.cloudflare.net
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: selector1

Found

Selectors: selector1
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 1024 bits

Checks

✓ Keys found: selector1 #7

DKIM keys found for this domain with selectors: selector1
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector1 (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

pass

Signed, DS published at parent

Found

DNSKEY records: Yes (2)
DS at parent: Yes
Algorithms: ECDSAP256SHA256 (13)
Key tags: 34505, 2371
Signatures valid until: 18 December 2026, 11:08 UTC

Checks

✓ Signed, DS published at parent #8

DNSSEC is enabled for this domain (DNSKEY and DS present), providing additional security for DNS lookups.
✓ Signatures valid until 2026-12-18 #21

DNSKEY signatures are valid until 2026-12-18T11:08:24Z.

MX

warn

2 mail servers

Found

Priority	Host	Records	Reverse DNS
10	mail.kinderpostzegels.nl	A 62.212.133.211	mail.kinderpostzegels.nl ✓
20	kinderpostzegels-nl.mail.protection.outlook.com	A 52.101.91.159 A 52.101.209.28 A 52.101.103.140 A 52.101.73.155 AAAA 2a01:111:f403:ca48::8 AAAA 2a01:111:f403:ca09::26 AAAA 2a01:111:f403:ca04::d AAAA 2a01:111:f403:ca04::c	mail-matpr04cu00207.inbound.protection.outlook.com ✓ mail-cpjpr05cu00104.inbound.protection.outlook.com ✓ mail-miypr02cu00204.inbound.protection.outlook.com ✓ mail-am7pr02cu00203.inbound.protection.outlook.com ✓ mail-miypr02cu00100.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.inbound.protection.outlook.com ✓ mail-db6pr03cu00105.inbound.protection.outlook.com ✓ mail-db9pr02cu00204.inbound.protection.outlook.com ✓

Checks

✓ 2 MX records #9

Found 2 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: mail.kinderpostzegels.nl

#11
✓ Redundant MX hosts #12

Found 2 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 2 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 9 MX addresss have a PTR record that resolves back to them.

TLS

warn

MTA-STS testing · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record: v=STSv1; id=20190601000000Z
Policy URL: https://mta-sts.kinderpostzegels.nl/.well-known/mta-sts.txt
Mode: testing
Allowed MX: mail.kinderpostzegels.nl, kinderpostzegels-nl.mail.protection.outlook.com
Max age: 1209600 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:a0a53fce@in.mailhardener.com

DANE (TLSA records)

MX host	TLSA	DNSSEC
mail.kinderpostzegels.nl	none	-
kinderpostzegels-nl.mail.protection.outlook.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20190601000000Z.
!

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:a0a53fce@in.mailhardener.com
i

Not used

No MX host publishes TLSA records. DANE lets senders verify your mail server's certificate through DNSSEC; it requires DNSSEC on the MX host's zone.

#36

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