Mail domain report: grandchambery.fr

SPF

pass

SPF record published

Found

Record: v=spf1 include:includespf.security-mail.net include:_spf-paas.eolas-services.com include:_spf.aspmail.info include:spf.horanet.com include:spf.mailjet.com include:spf.brevo.com -all
DNS lookups: 6 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 6 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.grandchambery.fr)

Found

Record: v=DMARC1;p=reject;adkim=r;rua=mailto:cagc.rua@emailsecurity.merox.io;
Found at: _dmarc.grandchambery.fr
External report address: mailto:cagc.rua@emailsecurity.merox.io (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:cagc.rua@emailsecurity.merox.io	Aggregate report addresses
adkim	r	DKIM alignment (r = relaxed, s = strict)

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:cagc.rua@emailsecurity.merox.io
✓ 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, k1

Found

Selectors: mail, k1
_domainkey: NOERROR

Selector	Key	Flags
mail	RSA 4096 bits	h=sha256
k1	RSA 1024 bits

Checks

✓ Keys found: mail, k1 #7

DKIM keys found for this domain with selectors: mail, k1
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: k1 (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: ECDSAP256SHA256 (13)
Key tags: 22854, 64057
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	france.security-mail.net	A 85.31.212.2 A 85.31.212.4 A 85.31.212.202 A 85.31.212.201	mx.security-mail.net ✓ mx.security-mail.net ✓ mx.security-mail.net ✓ mx.security-mail.net ✓
20	europe.security-mail.net	A 85.31.212.202 A 85.31.212.4 A 85.31.212.201 A 85.31.212.2	mx.security-mail.net ✓ mx.security-mail.net ✓ mx.security-mail.net ✓ mx.security-mail.net ✓

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: france.security-mail.net, europe.security-mail.net

#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 8 MX addresss have a PTR record that resolves back to them.

TLS

pass

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

Found

MTA-STS record: v=STSv1; id=20260518132921296318;
Policy URL: https://mta-sts.grandchambery.fr/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: france.security-mail.net, europe.security-mail.net
Max age: 2628000 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:cagc.tlsr@emailsecurity.merox.io

DANE (TLSA records)

MX host	TLSA	DNSSEC
france.security-mail.net	3 1 1 56f11939499543a2…	Yes
europe.security-mail.net	3 1 1 56f11939499543a2…	Yes

Checks

✓ Record published #32

MTA-STS record found with id 20260518132921296318.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 730h0m0s.
✓ 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:cagc.tlsr@emailsecurity.merox.io
✓ DANE on all MX hosts #36

All 2 MX hosts 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