compagniedumontblanc.fr

Checked 22 October 2026, 02:24 UTC · via 8.8.8.8
✗Problems found
22 passed 4 warnings 1 failed 3 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:sendgrid.net include:spfcloud.letsignit.com include:spf.mailjet.com include:_spf.salesforce.com ip4:194.147.227.123 ip4:185.125.25.23 ip4:164.177.62.154 mx ~all
DNS lookups
10 of 10
Void lookups
0 of 2

Checks

  • ✓ No deprecated ptr mechanism #1
    No ptr mechanism found in SPF record.
  • ✓ 10 of 10 DNS lookups #2
    SPF record needs 10 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

fail

p=none (_dmarc.compagniedumontblanc.fr)

Found

Record
v=DMARC1; p=none; aspf=s; adkim=s
Found at
_dmarc.compagniedumontblanc.fr
TagValueMeaning
vDMARC1Version
pnonePolicy
adkimsDKIM alignment (r = relaxed, s = strict)
aspfsSPF alignment (r = relaxed, s = strict)

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.
  • !
    No aggregate reports (rua)
    DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19

DKIM

pass

Selectors: selector1, selector2

Found

Selectors
selector1, selector2
_domainkey
NOERROR
SelectorKeyFlags
selector1RSA 2048 bits
selector2RSA 2048 bits

Checks

  • ✓ Keys found: selector1, selector2 #7
    DKIM keys found for this domain with selectors: selector1, selector2
  • ✓ Strong keys #23
    DKIM keys are strong enough: selector1: RSA 2048 bits; selector2: RSA 2048 bits.
  • ✓ 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
23866, 5223
Signatures valid until
16 November 2026, 11:32 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 2026-11-16 #21
    DNSKEY signatures are valid until 2026-11-16T11:32:38Z.

MX

warn

3 mail servers

Found

PriorityHostRecordsReverse DNS
5mx5.compagniedumontblanc.frA 194.147.227.123mailhost.compagniedumontblanc.fr ✓
10mx10.compagniedumontblanc.frA 195.15.143.3mailhost.compagniedumontblanc.fr (does not resolve back)
20mx20.compagniedumontblanc.frA 164.177.62.154mailhost.compagniedumontblanc.fr ✓

Checks

  • ✓ 3 MX records #9
    Found 3 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: mx5.compagniedumontblanc.fr, mx10.compagniedumontblanc.fr, mx20.compagniedumontblanc.fr
    #11
  • ✓ Redundant MX hosts #12
    Found 3 MX records, which provides redundancy for email delivery.
  • ✓ At most 5 MX records #13
    Found 3 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 does not match
    The PTR name of these addresses does not resolve back to the same address: 195.15.143.3 -> mailhost.compagniedumontblanc.fr.
    #30

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 3 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
mx5.compagniedumontblanc.frnone-
mx10.compagniedumontblanc.frnone-
mx20.compagniedumontblanc.frnone-

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