Mail domain report: bnnvara.nl

SPF

pass

SPF record published

Found

Record: v=spf1 include:bls8bnbdd2.powerspf.com ~all
DNS lookups: 3 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 3 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=reject (_dmarc.bnnvara.nl)

Found

Record: v=DMARC1; p=reject; sp=none; aspf=s; rua=mailto:4tlq5y0ymz@rua.powerdmarc.com,mailto:dmarc_agg@vali.email; ruf=mailto:4tlq5y0ymz@ruf.powerdmarc.com,mailto:dmarc_agg@vali.email; fo=1; t=n;
Found at: _dmarc.bnnvara.nl
External report address: mailto:4tlq5y0ymz@rua.powerdmarc.com (authorized)
External report address: mailto:dmarc_agg@vali.email (authorized)
External report address: mailto:4tlq5y0ymz@ruf.powerdmarc.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
sp	none	Subdomain policy
rua	mailto:4tlq5y0ymz@rua.powerdmarc.com,mailto:dmarc_agg@vali.email	Aggregate report addresses
ruf	mailto:4tlq5y0ymz@ruf.powerdmarc.com,mailto:dmarc_agg@vali.email	Failure report addresses
aspf	s	SPF alignment (r = relaxed, s = strict)
fo	1	Failure reporting options
t	n

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:4tlq5y0ymz@rua.powerdmarc.com, mailto:dmarc_agg@vali.email
!

Subdomains unprotected (sp=none)

DMARC subdomain policy is sp=none, so spoofed mail from subdomains is not blocked. Consider sp=quarantine or sp=reject.

#20
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

warn

Selectors: selector1, s1, s2

Found

Selectors: selector1, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 1024 bits
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: selector1, s1, s2 #7

DKIM keys found for this domain with selectors: selector1, s1, s2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: selector1 (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: 19143
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
8	bnnvara-nl.mail.protection.outlook.com	A 52.101.73.120 A 52.101.91.162 A 52.101.73.123 A 52.101.68.12 AAAA 2a01:111:f403:ca09::28 AAAA 2a01:111:f403:ca09::26 AAAA 2a01:111:f403:ca04::10 AAAA 2a01:111:f403:ca04::d	mail-am7pr02cu00300.inbound.protection.outlook.com ✓ mail-matpr04cu00302.inbound.protection.outlook.com ✓ mail-am6pr02cu00203.inbound.protection.outlook.com ✓ mail-db9pr02cu00204.inbound.protection.outlook.com ✓ mail-am6pr02cu00300.inbound.protection.outlook.com ✓ mail-am8pr83cu00106.inbound.protection.outlook.com ✓ mail-dbapr03cu00100.inbound.protection.outlook.com ✓ mail-db6pr03cu00105.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

MTA-STS testing · TLS-RPT · DANE on 0 of 1 MX hosts

Found

MTA-STS record: v=STSv1; id=20240214095610322258;
Policy URL: https://mta-sts.bnnvara.nl/.well-known/mta-sts.txt
Mode: testing
Allowed MX: bnnvara-nl.mail.protection.outlook.com
Max age: 86400 seconds
TLS-RPT record: v=TLSRPTv1;rua=mailto:4tlq5y0ymz@tls.powerdmarc.com

DANE (TLSA records)

MX host	TLSA	DNSSEC
bnnvara-nl.mail.protection.outlook.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20240214095610322258.
!

Policy in testing mode

With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.

#33
✓ All MX hosts covered #34

Every MX host matches an mx: line of the MTA-STS policy.
✓ Reports enabled #35

TLS reports are sent to: mailto:4tlq5y0ymz@tls.powerdmarc.com
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