Mail domain report: velsen.nl

SPF

pass

SPF record published

Found

Record: v=spf1 include:_spf.services.centric.eu include:_spf.zivver.com include:spf.pinkprivate.cloud include:_spf.axxerion.com include:spf.protection.outlook.com ip4:34.252.27.239/32 ip4:85.10.138.164/32 ip4:34.249.196.78/32 ip4:34.251.157.56/32 ip4:35.157.154.159/32 ip4:35.157.187.101/32 ip4:78.108.130.88 ip4:213.206.251.36 ip4:212.61.137.180 ip4:168.128.66.102 ip4:168.128.66.86 ip4:168.128.10.123 ip4:168.128.10.10 ip4:168.128.66.6 ip4:168.128.10.34 ip4:213.34.83.65 ip4:80.246.186.181 ip4:217.114.107.191 ip4:82.215.18.0/28 ip4:82.215.18.96/28 ip4:46.182.222.130 ip4:46.182.222.133 ip4:46.182.222.142 ip4:91.192.38.98 ip4:185.136.64.128/27 ip4:185.136.65.128/27 ip4:77.245.87.160/27 ip4:80.246.181.64/27 ip4:217.149.70.32/27 ip4:82.201.72.32/27 ip4:95.85.18.134 ip4:198.211.118.187 ip4:198.211.119.188 ip4:198.211.122.161 ip4:198.211.123.64 ip4:193.163.108.129 ip4:176.74.246.79 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:89.250.189.21 ip4:37.17.212.82 ip6:2a00:1fb8:a13:1::25 ip6:2001:4cb8:59c:1::25 ip4:194.53.72.4 ip4:194.53.72.252 ip4:31.223.173.49 ip4:178.21.220.11/32 ip4:178.21.220.12/32 ip6:2a00:1de0:0:b54:10:29:0:241/128 ip6:2a01:7c8:bb0b:70:5054:ff:fe0c:50ab/128 ip6:2a00:1de0:0:b54:10:29:0:242/128 -all
DNS lookups: 5 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 5 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.velsen.nl)

Found

Record: v=DMARC1; p=reject; rua=mailto:dmarc@velsen.nl; ruf=mailto:dmarc@velsen.nl; fo=1
Found at: _dmarc.velsen.nl

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:dmarc@velsen.nl	Aggregate report addresses
ruf	mailto:dmarc@velsen.nl	Failure report addresses
fo	1	Failure reporting options

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:dmarc@velsen.nl
✓ Subdomain policy: reject #20

Subdomains are covered by policy 'reject'.
✓ Report addresses in own domain #29

All report addresses are in your own organizational domain.

DKIM

warn

Selectors: k1, selector1

Found

Selectors: k1, selector1
_domainkey: NOERROR

Selector	Key	Flags
k1	RSA 1024 bits
selector1	RSA 2048 bits

Checks

✓ Keys found: k1, selector1 #7

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

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: k1 (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: RSASHA512 (10)
Key tags: 7572, 32465
Signatures valid until: 20 November 2026, 00:32 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 2026-11-20 #21

DNSKEY signatures are valid until 2026-11-20T00:32:07Z.

MX

warn

1 mail server

Found

Priority	Host	Records	Reverse DNS
0	velsen-nl.h-v1.mx.microsoft	A 52.101.73.145 A 52.101.103.140 A 52.101.91.159 A 52.101.185.114 AAAA 2a01:111:f403:ca21::e AAAA 2a01:111:f403:ca09::26 AAAA 2a01:111:f403:ca21::c AAAA 2a01:111:f403:ca38::a	mail-am6pr02cu00301.inbound.protection.outlook.com ✓ mail-miypr02cu00204.inbound.protection.outlook.com ✓ mail-matpr04cu00207.inbound.protection.outlook.com ✓ mail-zrxpr04cu00102.inbound.protection.outlook.com ✓ mail-matpr04cu00306.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.inbound.protection.outlook.com ✓ mail-matpr04cu00204.inbound.protection.outlook.com ✓ mail-wa4pr05cu00102.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 1 of 1 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
velsen-nl.h-v1.mx.microsoft	2 0 1 ea7a25255d111fc3… 3 1 1 54883cc5f1849331… 2 0 1 c1ad7778796d20bc… 3 1 1 cfd68bde4129c00a… 3 1 1 803f7447cc75b208…	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
!

Not configured

MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".

#35
✓ 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