Mail domain report: versontwerp.nl

SPF

pass

SPF record published

Found

Record: v=spf1 a mx ip4:185.103.240.48 include:_spf.yourfilter.nl ~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

warn

p=quarantine (_dmarc.versontwerp.nl)

Found

Record: v=DMARC1;p=quarantine
Found at: _dmarc.versontwerp.nl

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy

Checks

!

Policy: quarantine

DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

#4
✓ 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.
!

No aggregate reports (rua)

DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...

#19
✓ Subdomain policy: quarantine #20

Subdomains are covered by policy 'quarantine'.

DKIM

fail

No keys found under the checked selectors

Found

Selectors: None found
_domainkey: NXDOMAIN

Checks

✗

No DKIM keys published

_domainkey.versontwerp.nl does not exist (NXDOMAIN), so no DKIM keys are published. DKIM helps prevent email spoofing. Configure DKIM with your email service provider.

#7

DNSSEC

pass

Signed, DS published at parent

Found

DNSKEY records: Yes (2)
DS at parent: Yes
Algorithms: RSASHA256 (8)
Key tags: 62764, 32403
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

pass

2 mail servers

Found

Priority	Host	Records	Reverse DNS
0	fallback.yourfilter.nl	A 185.223.33.23 A 185.103.241.22 A 185.223.33.30 A 185.103.241.23 A 185.223.33.25 A 185.223.33.27 A 185.223.33.26 AAAA 2a01:b941:2::30 AAAA 2a01:b941:2::29 AAAA 2a05:1500:702:9:1c00:7fff:fe00:5556 AAAA 2a05:1500:702:9:1c00:f0ff:fe00:5555 AAAA 2a01:b941:2::24 AAAA 2a01:b941:2::23 AAAA 2a01:b941:2::28	se23-yh.route25.eu ✓ se29-yh.route25.eu ✓ se16-yh.route25.eu ✓ se30-yh.route25.eu ✓ se21-yh.route25.eu ✓ se19-yh.route25.eu ✓ se20-yh.route25.eu ✓ se16-yh.route25.eu ✓ se17-yh.route25.eu ✓ se30-yh.route25.eu ✓ se29-yh.route25.eu ✓ se22-yh.route25.eu ✓ se23-yh.route25.eu ✓ se18-yh.route25.eu ✓
0	primary.yourfilter.nl	A 185.223.33.24 A 185.223.33.27 A 185.223.33.29 A 185.103.241.23 A 185.103.241.25 A 185.103.241.21 A 185.223.33.23 A 185.223.33.30 A 185.103.241.20 A 185.223.33.28 A 185.103.241.22 AAAA 2a01:b941:2::28 AAAA 2a05:1500:702:9:1c00:f0ff:fe00:5555 AAAA 2a01:b941:2::30 AAAA 2a01:b941:2::24 AAAA 2a05:1500:702:9:1c00:7fff:fe00:5556 AAAA 2a05:1500:702:9:1c00:a3ff:fe00:5558 AAAA 2a05:1500:702:9:1c00:a5ff:fe00:5553 AAAA 2a01:b941:2::23 AAAA 2a05:1500:702:9:1c00:2aff:fe00:5554 AAAA 2a01:b941:2::29 AAAA 2a01:b941:2::27 AAAA 2a01:b941:2::26 AAAA 2a01:b941:2::25	se22-yh.route25.eu ✓ se19-yh.route25.eu ✓ se17-yh.route25.eu ✓ se30-yh.route25.eu ✓ se26-yh.route25.eu ✓ se28-yh.route25.eu ✓ se23-yh.route25.eu ✓ se16-yh.route25.eu ✓ se27-yh.route25.eu ✓ se18-yh.route25.eu ✓ se29-yh.route25.eu ✓ se18-yh.route25.eu ✓ se29-yh.route25.eu ✓ se16-yh.route25.eu ✓ se22-yh.route25.eu ✓ se30-yh.route25.eu ✓ se26-yh.route25.eu ✓ se27-yh.route25.eu ✓ se23-yh.route25.eu ✓ se28-yh.route25.eu ✓ se17-yh.route25.eu ✓ se19-yh.route25.eu ✓ se20-yh.route25.eu ✓ se21-yh.route25.eu ✓

Checks

✓ 2 MX records #9

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

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 2 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
fallback.yourfilter.nl	none	-
primary.yourfilter.nl	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