Mail domain report: ahk.nl

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:85.17.187.192/27 ip4:62.204.93.128/27 ip4:95.211.74.192/27 ip4:83.149.98.0/25 ip4:85.17.205.0/27 ip4:145.90.1.135 ip4:145.90.1.140 ip4:51.15.35.16 ip4:77.87.162.241 ip4:145.90.1.34 ip4:95.97.137.215 ip4:77.72.148.144 ip4:84.241.173.108 ip4:145.90.1.130 ip4:185.40.97.114 ip4:85.90.64.176/28 ip4:85.90.64.192/28 IP4:94.143.211.206 ip4:83.247.85.194 ip4:81.4.87.187 ip4:85.10.128.212 ip4:37.60.193.40/29 ip4:167.89.0.0/17 ip4:208.117.48.0/20 ip4:50.31.32.0/19 ip4:198.37.144.0/20 ip4:198.21.0.0/21 ip4:192.254.112.0/20 ip4:168.245.0.0/17 ip4:149.72.0.0/16 ip4:159.183.0.0/16 ip4:134.128.64.0/19 ip4:134.128.96.0/19 ip4:223.165.113.0/24 ip4:223.165.115.0/24 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ip4:185.47.169.132 a:mailer1.activetickets.com a:myahk.componence.com include:spf.mailinglijst.nl include:spf.protection.outlook.com include:spf.topdesk.net include:_spf.salesforce.com include:spf.mailplatform.eu include:_spf.studiocloud.nl ~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

warn

p=quarantine (_dmarc.ahk.nl)

Found

Record: v=DMARC1;p=quarantine;rua=mailto:dmarcreports@ahk.nl;ruf=mailto:dmarcforensicreports@ahk.nl;sp=quarantine;fo=0:1:d:s
Found at: _dmarc.ahk.nl

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
sp	quarantine	Subdomain policy
rua	mailto:dmarcreports@ahk.nl	Aggregate report addresses
ruf	mailto:dmarcforensicreports@ahk.nl	Failure report addresses
fo	0:1:d:s	Failure reporting options

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.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:dmarcreports@ahk.nl
✓ Subdomain policy: quarantine #20

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

All report addresses are in your own organizational domain.

DKIM

warn

Selectors: selector2, s1, s2

Found

Selectors: selector2, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
selector2	RSA 1024 bits
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: selector2, s1, s2 #7

DKIM keys found for this domain with selectors: selector2, s1, s2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector2 (1024 bits), s2 (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 (1)
DS at parent: Yes
Algorithms: ECDSAP256SHA256 (13)
Key tags: 22988
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
0	ahk-nl.mail.protection.outlook.com	A 52.101.185.21 A 52.101.185.114 A 52.101.73.126 A 52.101.91.21 AAAA 2a01:111:f403:c967::a AAAA 2a01:111:f403:ca48::c AAAA 2a01:111:f403:ca09::24 AAAA 2a01:111:f403:ca09::a	mail-zrxpr05cu00105.inbound.protection.outlook.com ✓ mail-zrxpr04cu00102.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.inbound.protection.outlook.com ✓ mail-matpr05cu00105.inbound.protection.outlook.com ✓ mail-cpjpr05cu00102.inbound.protection.outlook.com ✓ mail-miypr03cu00104.inbound.protection.outlook.com ✓ mail-am6pr02cu00204.inbound.protection.outlook.com ✓ mail-am7pr02cu00202.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
ahk-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