Mail domain report: cnpf.fr

SPF

pass

SPF record published

Found

Record: v=spf1 mx ip4:15.236.191.128 ip4:13.39.136.244 ip4:195.154.28.107 include:spf4.sbr-master.net include:_mailcust.gandi.net -all
DNS lookups: 5 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 5 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.cnpf.fr)

Found

Record: v=DMARC1; p=reject; rua=mailto:80f28abf@in.mailhardener.com; ruf=mailto:80f28abf@in.mailhardener.com; rf=afrf; fo=0; adkim=r; aspf=r
Found at: _dmarc.cnpf.fr
External report address: mailto:80f28abf@in.mailhardener.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:80f28abf@in.mailhardener.com	Aggregate report addresses
ruf	mailto:80f28abf@in.mailhardener.com	Failure report addresses
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	r	SPF alignment (r = relaxed, s = strict)
fo	0	Failure reporting options
rf	afrf	Failure report format

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:80f28abf@in.mailhardener.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

No keys found under the checked selectors

Found

Selectors: None found
_domainkey: NOERROR

Checks

!

No key under common selectors

The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.

#7

DNSSEC

pass

Signed, DS published at parent

Found

DNSKEY records: Yes (1)
DS at parent: Yes
Algorithms: ECDSAP256SHA256 (13)
Key tags: 39866
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

2 mail servers

Found

Priority	Host	Records	Reverse DNS
10	d25900a.ess.barracudanetworks.com	A 209.222.82.252 A 209.222.82.253 A 209.222.82.255	mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓
10	d25900b.ess.barracudanetworks.com	A 209.222.82.253 A 209.222.82.255 A 209.222.82.252	mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓ mail.ess.barracuda.com ✓

Checks

✓ 2 MX records #9

Found 2 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: d25900a.ess.barracudanetworks.com, d25900b.ess.barracudanetworks.com

#11
✓ 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 6 MX addresss have a PTR record that resolves back to them.

TLS

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record: v=STSv1; id=20250408T114900;
Policy URL: https://mta-sts.cnpf.fr/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: d25900a.ess.barracudanetworks.com, d25900b.ess.barracudanetworks.com
Max age: 604800 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:80f28abf@in.mailhardener.com,mailto:wulfran.mirlyaz@cnpf.fr

DANE (TLSA records)

MX host	TLSA	DNSSEC
d25900a.ess.barracudanetworks.com	none	-
d25900b.ess.barracudanetworks.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20250408T114900.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 168h0m0s.
✓ 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:80f28abf@in.mailhardener.com, mailto:wulfran.mirlyaz@cnpf.fr
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