Mail domain report: nba.nl

SPF

fail

SPF record published

Found

Record: v=spf1 include:spf.protection.outlook.com include:sendgrid.net include:spf.xaurum.net include:_spf.linqhost.nl include:eventsairmail.com include:spf.msgc.cloud ip4:93.117.217.181 ip4:198.207.147.224/27 ip4:204.239.0.224/27 ip4:216.230.14.224/27 ip4:136.144.168.253 ip4:170.194.20.168 ip4:170.194.20.169 ip4:195.159.18.231 ip4:195.159.18.233 ip4:185.55.155.153 ip4:213.171.128.32/29 ip4:213.171.129.32/29 ip4:84.20.5.128/27 ip4:91.217.141.1/25 ip4:5.39.185.0/24 ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/19 ip4:54.240.96.0/19 ip4:52.82.172.0/22 ip4:46.44.132.90/32 ip4:46.44.132.91/32 ip4:46.44.132.92/32 ip4:46.44.132.93/32 ip4:46.44.132.94/32 ip4:46.44.132.95/32 ip4:46.44.132.96/32 ip4:46.44.132.97/32 ip4:46.44.132.98/32 ip4:46.44.132.99/32 ip4:80.240.139.238/32 ip4:5.22.252.68 ip4:5.22.248.113 ip4:5.22.248.115 ip4:185.46.182.1 ip4:185.46.182.200/29 ip4:185.46.182.208/31 ip4:20.82.87.96/28 ip4:87.233.143.7 ip4:87.233.143.8 ip4:87.233.82.2 ip4:87.233.82.3 ip4:87.233.82.8 ip4:87.233.82.9 ip4:84.22.109.9 ip4:84.22.111.210 ip4:46.31.48.0/21 ip6:2a02:23e8::/32 ip4:37.221.216.0/21 ip4:52.19.108.181 ip4:52.208.33.50 ip4:52.50.74.149 ip4:52.215.160.188 ip4:45.129.61.177 ip4:54.228.214.228 ~all
DNS lookups: 14 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✗

14 DNS lookups, over the limit of 10

SPF record needs 14 DNS lookups (including nested includes), more than the limit of 10. Receivers will return a permerror; reduce includes or flatten the record.

#2
✓ 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

fail

p=none (_dmarc.nba.nl)

Found

Record: v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email;
Found at: _dmarc.nba.nl
External report address: mailto:dmarc_agg@vali.email (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
rua	mailto:dmarc_agg@vali.email	Aggregate report addresses

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:dmarc_agg@vali.email
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: selector1, selector2

Found

Selectors: selector1, selector2
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 1024 bits
selector2	RSA 1024 bits

Checks

✓ Keys found: selector1, selector2 #7

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

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector1 (1024 bits), 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 (2)
DS at parent: Yes
Algorithms: RSASHA256 (8)
Key tags: 46051, 19389
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
10	nba-nl.mail.protection.outlook.com	A 52.101.68.12 A 52.101.68.21 A 52.101.73.123 A 52.101.91.153 AAAA 2a01:111:f403:ca21::c AAAA 2a01:111:f403:ca04::f AAAA 2a01:111:f403:ca3c::6 AAAA 2a01:111:f403:ca09::a	mail-db9pr02cu00204.inbound.protection.outlook.com ✓ mail-db4pr02cu00205.inbound.protection.outlook.com ✓ mail-am6pr02cu00203.inbound.protection.outlook.com ✓ mail-matpr04cu00101.inbound.protection.outlook.com ✓ mail-matpr04cu00204.inbound.protection.outlook.com ✓ mail-db7pr03cu00507.inbound.protection.outlook.com ✓ mail-zrxpr04cu00106.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
nba-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