Mail domain report: lentiz.nl

SPF

pass

SPF record published

Found

Record: v=spf1 a mx ip4:145.100.36.2 ip4:195.169.4.212 ip4:195.169.4.208 ip4:85.90.68.242 include:servers.mcsv.net include:spf.protection.outlook.com include:spf.afas.online include:spf.slik.eu include:spf.mailjet.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

pass

p=reject (_dmarc.lentiz.nl)

Found

Record: v=DMARC1; p=reject; rua=mailto:ok0vi6i3@ag.eu.dmarcadvisor.com,mailto:dmarc@lentiz.nl; ruf=mailto:ok0vi6i3@fr.eu.dmarcadvisor.com, mailto:dmarc@lentiz.nl;
Found at: _dmarc.lentiz.nl
External report address: mailto:ok0vi6i3@ag.eu.dmarcadvisor.com (authorized)
External report address: mailto:ok0vi6i3@fr.eu.dmarcadvisor.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:ok0vi6i3@ag.eu.dmarcadvisor.com,mailto:dmarc@lentiz.nl	Aggregate report addresses
ruf	mailto:ok0vi6i3@fr.eu.dmarcadvisor.com, mailto:dmarc@lentiz.nl	Failure report addresses

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:ok0vi6i3@ag.eu.dmarcadvisor.com, mailto:dmarc@lentiz.nl
✓ 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, k1, selector1, s1, s2

Found

Selectors: mail, k1, selector1, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
mail	public key is not valid base64
k1	RSA 1024 bits
selector1	RSA 1024 bits
s1	RSA 2048 bits
s2	RSA 2048 bits

Checks

✓ Keys found: mail, k1, selector1, s1, s2 #7

DKIM keys found for this domain with selectors: mail, k1, selector1, s1, s2
!

Unreadable DKIM key

These keys could not be parsed, so signatures made with them will fail: mail (public key is not valid base64).

#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 (3)
DS at parent: Yes
Algorithms: RSASHA256 (8)
Key tags: 52687, 33540, 59139
Signatures valid until: 5 November 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 2026-11-05 #21

DNSKEY signatures are valid until 2026-11-05T00:00:00Z.

MX

warn

1 mail server

Found

Priority	Host	Records	Reverse DNS
0	lentiz-nl.u-v1.mx.microsoft	A 52.101.209.28 A 52.101.181.153 A 52.101.91.162 A 52.101.68.10 AAAA 2a01:111:f403:ca04::4 AAAA 2a01:111:f403:ca21::10 AAAA 2a01:111:f403:ca21::e AAAA 2a01:111:f403:ca48::a	mail-cpjpr05cu00104.inbound.protection.outlook.com ✓ mail-wa4pr04cu00101.inbound.protection.outlook.com ✓ mail-matpr04cu00302.inbound.protection.outlook.com ✓ mail-dbbpr03cu00102.inbound.protection.outlook.com ✓ mail-db4pr02cu00204.inbound.protection.outlook.com ✓ mail-matpr05cu00100.inbound.protection.outlook.com ✓ mail-matpr04cu00306.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 · TLS-RPT · DANE on 1 of 1 MX hosts

Found

TLS-RPT record: v=TLSRPTv1;rua=mailto:dmarc@lentiz.nl

DANE (TLSA records)

MX host	TLSA	DNSSEC
lentiz-nl.u-v1.mx.microsoft	2 0 1 c1ad7778796d20bc… 3 1 1 803f7447cc75b208… 3 1 1 cfd68bde4129c00a… 3 1 1 54883cc5f1849331… 2 0 1 ea7a25255d111fc3…	Yes

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
✓ Reports enabled #35

TLS reports are sent to: mailto:dmarc@lentiz.nl
✓ DANE on all MX hosts #36

All 1 MX host publish DNSSEC-validated TLSA records.

BIMI

warn

https://www.lentiz.nl/assets/uploads/2024/04/beeldmerkje-lentiz-bimi-2.svg

Found

Record: v=BIMI1; l=https://www.lentiz.nl/assets/uploads/2024/04/beeldmerkje-lentiz-bimi-2.svg; a=;
Found at: default._bimi.lentiz.nl
Logo: https://www.lentiz.nl/assets/uploads/2024/04/beeldmerkje-lentiz-bimi-2.svg

Checks

!

No certificate (a=)

The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.

#38
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.