primeguide.fr

Checked 22 October 2026, 04:53 UTC · via 8.8.8.8
!Passed with warnings
9 passed 3 warnings 0 failed 7 info

SPF

info

DNS query for primeguide.fr returned SERVFAIL

Checks

  • i
    Could not be checked
    The SPF lookup failed, so this could not be checked: DNS query for primeguide.fr returned SERVFAIL
    #6

DMARC

info

DNS query for _dmarc.primeguide.fr returned SERVFAIL

Checks

  • i
    Could not be checked
    The DMARC lookup failed, so this could not be checked: DNS query for _dmarc.primeguide.fr returned SERVFAIL
    #5

DKIM

pass

Selectors: dkim

Found

Selectors
dkim
_domainkey
SERVFAIL
SelectorKeyFlags
dkimRSA 2048 bits

Checks

  • ✓ Keys found: dkim #7
    DKIM keys found for this domain with selectors: dkim
  • ✓ Strong keys #23
    DKIM keys are strong enough: dkim: RSA 2048 bits.
  • ✓ No problematic flags #24
    No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

info

DNS query for primeguide.fr returned SERVFAIL

Checks

  • i
    Could not be checked
    The DNSSEC lookup failed, so this could not be checked: DNS query for primeguide.fr returned SERVFAIL
    #8

MX

warn

1 mail server

Found

PriorityHostRecordsReverse DNS
10mail.parktons.comA 155.138.212.151155-138-212-151.lum-int.io (does not resolve back)

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: mail.parktons.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 does not match
    The PTR name of these addresses does not resolve back to the same address: 155.138.212.151 -> 155-138-212-151.lum-int.io.
    #30

TLS

info

no MTA-STS · no TLS-RPT · DANE on 0 of 1 MX hosts

Found

DANE (TLSA records)

MX hostTLSADNSSEC
mail.parktons.comnone-
Lookup error: DNS query for _mta-sts.primeguide.fr returned SERVFAIL

Checks

  • i
    Could not be checked
    The MTA-STS lookup failed, so this could not be checked: DNS query for _mta-sts.primeguide.fr returned SERVFAIL
    #32
  • i
    Could not be checked
    The TLS-RPT lookup failed, so this could not be checked: DNS query for _smtp._tls.primeguide.fr returned SERVFAIL
    #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

DNS query for default._bimi.primeguide.fr returned SERVFAIL

Checks

  • i
    Could not be checked
    The BIMI lookup failed, so this could not be checked: DNS query for default._bimi.primeguide.fr returned SERVFAIL
    #38