42l.fr

Checked 22 October 2026, 01:21 UTC · via 8.8.8.8
!Passed with warnings
33 passed 2 warnings 0 failed 1 info

SPF

pass

SPF record published

Found

Record
v=spf1 mx a ip4:195.201.30.134 ip6:2a01:4f8:1c1a:c943::1 ~all
DNS lookups
2 of 10
Void lookups
0 of 2

Checks

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

warn

p=quarantine (_dmarc.42l.fr)

Found

Record
v=DMARC1;p=quarantine;rua=mailto:dmarc@42l.fr;adkim=r;aspf=r
Found at
_dmarc.42l.fr
TagValueMeaning
vDMARC1Version
pquarantinePolicy
ruamailto:dmarc@42l.frAggregate report addresses
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF alignment (r = relaxed, s = strict)

Checks

  • !
    Policy: quarantine
    DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.
    #4
  • ✓ 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:dmarc@42l.fr
  • ✓ Subdomain policy: quarantine #20
    Subdomains are covered by policy 'quarantine'.
  • ✓ Report addresses in own domain #29
    All report addresses are in your own organizational domain.

DKIM

pass

Selectors: mail

Found

Selectors
mail
_domainkey
NOERROR
SelectorKeyFlags
mailRSA 2048 bitsh=sha256

Checks

  • ✓ Keys found: mail #7
    DKIM keys found for this domain with selectors: mail
  • ✓ Strong keys #23
    DKIM keys are strong enough: mail: 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
55516, 37379
Signatures valid until
18 November 2026, 23:34 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 2026-11-18 #21
    DNSKEY signatures are valid until 2026-11-18T23:34:44Z.

MX

pass

2 mail servers

Found

PriorityHostRecordsReverse DNS
1mail.42l.frA 195.201.30.134 AAAA 2a01:4f8:1c1a:c943::1mail.42l.fr ✓ mail.42l.fr ✓
100mailing.lacontrevoie.frA 178.105.16.6 AAAA 2a01:4f8:c015:dd0d::1mailing.lacontrevoie.fr ✓ mailing.lacontrevoie.fr ✓

Checks

  • ✓ 2 MX records #9
    Found 2 MX records for this domain.
  • ✓ All hosts resolve #10
    All MX records resolve to valid IP addresses.
  • ✓ All hosts have IPv6 #11
    All MX records resolve to IPv6 addresses.
  • ✓ 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 4 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=20240713014700
Policy URL
https://mta-sts.42l.fr/.well-known/mta-sts.txt
Mode
enforce
Allowed MX
mail.42l.fr, mailing.lacontrevoie.fr
Max age
86400 seconds
TLS-RPT record
v=TLSRPTv1; rua=mailto:dmarc@42l.fr

DANE (TLSA records)

MX hostTLSADNSSEC
mail.42l.frnone-
mailing.lacontrevoie.frnone-

Checks

  • ✓ Record published #32
    MTA-STS record found with id 20240713014700.
  • ✓ Policy enforced #33
    The MTA-STS policy is enforced and cached for 24h0m0s.
  • ✓ 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:dmarc@42l.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

warn

https://42l.fr/.well-known/bimi.svg

Found

Record
v=BIMI1; l=https://42l.fr/.well-known/bimi.svg
Found at
default._bimi.42l.fr
Logo
https://42l.fr/.well-known/bimi.svg

Checks

  • !
    No certificate (a=)
    The logo is published without a Verified Mark Certificate. Gmail and Apple Mail only show BIMI logos with a VMC or CMC; Yahoo shows it without one.
    #38
  • ✓ DMARC meets BIMI requirements #39
    DMARC is enforced on all mail, as BIMI requires.