Mail domain report: inextenso.fr

SPF

pass

SPF record published

Found

Record: v=spf1 include:sendgrid.net include:fdspfus.freshemail.io include:spf.protection.outlook.com a:smtp-gw1.silae.fr ip4:5.226.2.176/28 ip4:149.62.152.106 ip4:195.28.206.74 ip4:185.33.15.18 ip4:89.185.62.134 ip4:62.210.40.242 ip4:91.205.116.251 ip4:91.205.116.247 ip4:91.205.116.248 ip4:51.68.81.129 ip4:92.103.226.85 ip4:89.185.48.53 ip4:135.181.105.35 ip4:31.172.237.242 ip4:188.165.56.163 -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.inextenso.fr)

Found

Record: v=DMARC1; p=reject ; rua=mailto:inextenso.rua@emailsecurity.merox.io; ruf=mailto:inextenso.ruf@emailsecurity.merox.io; fo=d;
Found at: _dmarc.inextenso.fr
External report address: mailto:inextenso.rua@emailsecurity.merox.io (authorized)
External report address: mailto:inextenso.ruf@emailsecurity.merox.io (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
rua	mailto:inextenso.rua@emailsecurity.merox.io	Aggregate report addresses
ruf	mailto:inextenso.ruf@emailsecurity.merox.io	Failure report addresses
fo	d	Failure reporting options

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:inextenso.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, selector1, selector2, s1, s2

Found

Selectors: mail, k1, selector1, selector2, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
mail	RSA 1024 bits
k1	RSA 1024 bits
selector1	RSA 2048 bits
selector2	RSA 2048 bits
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: mail, k1, selector1, selector2, s1, s2 #7

DKIM keys found for this domain with selectors: mail, k1, selector1, selector2, s1, s2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: mail (1024 bits), k1 (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

warn

Not signed

Found

DNSKEY records: No (0)
DS at parent: No

Checks

!

Not enabled

DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8

MX

warn

1 mail server

Found

Priority	Host	Records	Reverse DNS
10	inextenso-fr.mail.protection.outlook.com	A 52.101.166.1 A 52.101.164.0 A 52.101.166.0 A 52.101.166.2	mail-pr0p264cu01301.inbound.protection.outlook.com ✓ mail-mrzp264cu00100.inbound.protection.outlook.com ✓ mail-pa5p264cu00200.inbound.protection.outlook.com ✓ mail-paup264cu00202.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.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: inextenso-fr.mail.protection.outlook.com

#11
!

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

TLS

info

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

Found

MTA-STS record: v=STSv1; id=20251104172050208750;
Policy URL: https://mta-sts.inextenso.fr/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: inextenso-fr.mail.protection.outlook.com
Max age: 604800 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:inextenso.tlsr@emailsecurity.merox.io;

DANE (TLSA records)

MX host	TLSA	DNSSEC
inextenso-fr.mail.protection.outlook.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20251104172050208750.
✓ 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:inextenso.tlsr@emailsecurity.merox.io
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

pass

https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.svg

Found

Record: v=BIMI1; l=https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.svg; a=https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.pem;
Found at: default._bimi.inextenso.fr
Logo: https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.svg
Certificate: https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.pem

Checks

✓ Logo and certificate published #38

BIMI logo: https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.svg; certificate: https://vmc.digicert.com/de9a6b12-b742-4971-8752-05de1631cf4d.pem
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.