Mail domain report: alkmaar.nl

SPF

pass

SPF record published

Found

Record: v=spf1 include:spf.protection.outlook.com ip4:51.136.120.10 ip4:185.249.220.0/24 ip4:40.95.64.0/22 ip4:185.225.161.0/24 ip4:51.105.148.248 ip4:20.50.169.50 ip4:185.92.61.0/24 ip4:31.7.1.29 ip4:195.225.101.66 ip6:2a03:9700:8000:1::29 include:spf.afas.online include:_spf.mailrelay.zorgring.nl include:_spf.service.centric.eu include:spf_servers.yard.nl include:spf_cluster.yard.nl include:spf.zaaksysteem.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

pass

p=reject (_dmarc.alkmaar.nl)

Found

Record: v=DMARC1; p=reject; rua=mailto:5ztwg1fi@ag.eu.dmarcadvisor.com; ruf=mailto:5ztwg1fi@fr.eu.dmarcadvisor.com;
Found at: _dmarc.alkmaar.nl
External report address: mailto:5ztwg1fi@ag.eu.dmarcadvisor.com (authorized)
External report address: mailto:5ztwg1fi@fr.eu.dmarcadvisor.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:5ztwg1fi@ag.eu.dmarcadvisor.com	Aggregate report addresses
ruf	mailto:5ztwg1fi@fr.eu.dmarcadvisor.com	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:5ztwg1fi@ag.eu.dmarcadvisor.com
✓ 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, selector1, selector2

Found

Selectors: mail, selector1, selector2
_domainkey: NOERROR

Selector	Key	Flags
mail	RSA 2048 bits	h=sha256
selector1	RSA 2048 bits
selector2	RSA 1024 bits

Checks

✓ Keys found: mail, selector1, selector2 #7

DKIM keys found for this domain with selectors: mail, selector1, selector2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector2 (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: 36311
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	alkmaar-nl.p-v1.mx.microsoft	A 52.101.103.143 A 52.101.209.31 A 52.101.68.12 A 52.101.103.162 AAAA 2a01:111:f403:ca04::c AAAA 2a01:111:f403:ca3c::6 AAAA 2a01:111:f403:ca3c::8 AAAA 2a01:111:f403:ca09::26	mail-miypr03cu00107.inbound.protection.outlook.com ✓ mail-cpjpr05cu00207.inbound.protection.outlook.com ✓ mail-db9pr02cu00204.inbound.protection.outlook.com ✓ mail-miypr03cu00202.inbound.protection.outlook.com ✓ mail-db9pr02cu00204.inbound.protection.outlook.com ✓ mail-zrxpr04cu00106.inbound.protection.outlook.com ✓ mail-zrxpr05cu00100.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.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:5ztwg1fi@tls.eu.dmarcadvisor.com;

DANE (TLSA records)

MX host	TLSA	DNSSEC
alkmaar-nl.p-v1.mx.microsoft	3 1 1 cfd68bde4129c00a… 3 1 1 54883cc5f1849331… 2 0 1 c1ad7778796d20bc… 2 0 1 ea7a25255d111fc3… 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
✓ Reports enabled #35

TLS reports are sent to: mailto:5ztwg1fi@tls.eu.dmarcadvisor.com
✓ 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