metropolegrandparis.fr

SPF record published

Found

Record

v=spf1 ip4:89.185.48.52 ip4:195.42.149.208 ip4:54.37.148.224 ip4:51.91.74.234 ip4:164.138.244.129 ip4:83.206.252.127 include:de._netblocks.mimecast.com include:sendgrid.net include:spf.protection.outlook.com include:spf.cap-collectif.com include:whmlanteas-mgp.sitec.corsica -all

DNS lookups

8 of 10

Void lookups

1 of 2

Problem

include:whmlanteas-mgp.sitec.corsica does not exist or has no records

Checks

• ✓ No deprecated ptr mechanism #1

  No ptr mechanism found in SPF record.
• !

  8 of 10 DNS lookups, with problems

  SPF record needs 8 DNS lookups (limit is 10). Problems found: include:whmlanteas-mgp.sitec.corsica does not exist or has no records.

  #2
• ✓ 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.
• !

  1 void lookup

  1 include/redirect target does not exist or has no records (limit is 2). This usually is a stale include; remove it.

  #26
• ✓ No overly broad IP ranges #27

  All ip4/ip6 ranges are narrow enough.

Selectors: default, selector2

Found

Selectors

default, selector2

_domainkey

NXDOMAIN

Checks

• ✓ Keys found: default, selector2 #7

  DKIM keys found for this domain with selectors: default, selector2
• !

  1024-bit DKIM key

  1024-bit RSA keys are the minimum and are considered weak today: selector2 (1024 bits). Rotate to a 2048-bit key.

  #23
• ✓ No problematic flags #24

  No keys in test mode, revoked, or limited to SHA-1.

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

3 mail servers

Found

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: de-smtp-inbound-1.mimecast.com, de-smtp-inbound-2.mimecast.com

  #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 confirmed #30

  All 12 MX addresss have a PTR record that resolves back to them.

MTA-STS testing · TLS-RPT · DANE on 0 of 3 MX hosts

Found

MTA-STS record

v=STSv1; id=20250321T120000;

Policy URL

https://mta-sts.metropolegrandparis.fr/.well-known/mta-sts.txt

Mode

testing

Allowed MX

*.mail.protection.outlook.com

Max age

604800 seconds

TLS-RPT record

v=TLSRPTv1; rua=mailto:8902930c-38a7-41bc-97e3-e464a8eb4c1b@tlsrpt.de.mimecastdmarcanalyzer.com

DANE (TLSA records)

Checks

• ✓ Record published #32

  MTA-STS record found with id 20250321T120000.
• !

  Policy in testing mode

  With mode: testing, senders only report TLS problems (via TLS-RPT) and still deliver without TLS. Switch to mode: enforce once reports are clean.

  #33
• !

  MX hosts missing from policy

  These MX hosts are not listed in the MTA-STS policy (mx: *.mail.protection.outlook.com): de-smtp-inbound-1.mimecast.com, de-smtp-inbound-2.mimecast.com. This will break delivery once the policy is enforced.

  #34
• ✓ Reports enabled #35

  TLS reports are sent to: mailto:8902930c-38a7-41bc-97e3-e464a8eb4c1b@tlsrpt.de.mimecastdmarcanalyzer.com
• 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