Mail domain report: dierenbescherming.nl

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:5.157.87.151/32 ip4:81.175.72.205 ip4:84.244.161.88/32 ip4:62.148.191.137/32 ip4:62.148.191.182/32 ip4:185.46.182.0/24 ip4:84.244.133.5/32 ip4:195.62.82.22 ip4:87.253.232.0/21 ip4:185.189.236.0/22 ip4:185.211.120.0/22 ip4:185.250.236.0/22 ip4:83.137.145.0/24 ip4:89.188.15.0/24 ip4:84.244.146.156 ip4:185.111.120.38 ip4:46.51.177.14 ip6:2a01:1b0:7999:402::/64 include:spf.protection.outlook.com include:_spf.salesforce.com include:_spf.exonet.nl include:_spf.2bmta.com include:_spf.formulierenserver.nl include:spf.topdesk.net include:spf.afas.online ip4:188.241.247.0/24 ip4:91.247.184.0/24 ip4:161.51.101.0/24 ip4:45.152.251.0/24 ip4:193.160.154.0/24 ip4:95.85.20.12 ip4:185.14.185.8 ip4:188.226.155.4 ip4:80.69.89.187/32 ip4:80.69.93.126/32 mx a ~all
DNS lookups: 10 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 10 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.dierenbescherming.nl)

Found

Record: v=DMARC1; p=none; rua=mailto:rua@report.rect.to,mailto:rua@dmarc.brevo.com;
Found at: _dmarc.dierenbescherming.nl
External report address: mailto:rua@report.rect.to (authorized)
External report address: mailto:rua@dmarc.brevo.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
rua	mailto:rua@report.rect.to,mailto:rua@dmarc.brevo.com	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:rua@report.rect.to, mailto:rua@dmarc.brevo.com
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: dkim, mail, selector1

Found

Selectors: dkim, mail, selector1
_domainkey: NOERROR

Selector	Key	Flags
dkim	RSA 1024 bits
mail	RSA 1024 bits
selector1	RSA 2048 bits

Checks

✓ Keys found: dkim, mail, selector1 #7

DKIM keys found for this domain with selectors: dkim, mail, selector1
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: dkim (1024 bits), mail (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: 20482, 23028
Signatures valid until: 29 October 2026, 00:00 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 2026-10-29 #21

DNSKEY signatures are valid until 2026-10-29T00:00:00Z.

MX

warn

1 mail server

Found

Priority	Host	Records	Reverse DNS
10	dierenbescherming-nl.mail.protection.outlook.com	A 52.101.91.153 A 52.101.209.28 A 52.101.68.8 A 52.101.73.120 AAAA 2a01:111:f403:ca48::8 AAAA 2a01:111:f403:ca21::a AAAA 2a01:111:f403:ca04::a AAAA 2a01:111:f403:ca48::a	mail-matpr04cu00101.inbound.protection.outlook.com ✓ mail-cpjpr05cu00104.inbound.protection.outlook.com ✓ mail-du0pr03cu00100.inbound.protection.outlook.com ✓ mail-am7pr02cu00300.inbound.protection.outlook.com ✓ mail-miypr02cu00100.inbound.protection.outlook.com ✓ mail-maspr04cu00102.inbound.protection.outlook.com ✓ mail-du0pr03cu00102.inbound.protection.outlook.com ✓ mail-miypr02cu00202.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

no MTA-STS · no TLS-RPT · DANE on 0 of 1 MX hosts

Found

DANE (TLSA records)

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

Checks

!

Not configured

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
i

Not configured

TLS-RPT lets senders report TLS delivery problems to you. It is most useful together with MTA-STS or DANE.

#35
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