Le Correctif The exact DNS records that get your email delivered. Run the free check
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Free check, no account

Your email isn't landing. Here's why, line by line.

We read your DNS and the headers of a real message. You leave with the exact records to publish, in the right order.

Run the free check
SPF
DKIM keys
DMARC policy
lecorrectif.fr/diagnostic
Check — exemple.fr
SPF3 includes, 12 lookups to fix
DKIMno key published to fix
DMARCp=none to fix
List-Unsubscribeheader missing to fix
rDNSmissing on the sending IP to fix
MX5 servers, consistent sound
rDNS
Real headers
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How it works

Your domain
exemple.fr
Reading DNS…

You give us a domain

We read public DNS live: MX, SPF, DKIM, DMARC, rDNS. Every line carries what was read and when.

Raw headers
Authentication-Results: spf=pass
dkim=none. Signed by another domain.

You paste the headers

From a message sent by the tool you actually use. We read headers, never your content.

Fix 1 of 4
_dmarc.exemple.fr TXT
v=DMARC1; p=quarantine;
Re-checked after your corrections

You get the fixes

Every record to create: name, type, exact value, in order. Then we re-read the domain and confirm each line.

Price

Full report, one domain
49 €one-off payment
  • Every DNS fix, with the exact value to paste
  • Analysis of a real message's headers
  • The order to apply them, and what breaks if you reverse it
  • The message to send to your provider
  • The re-check once you've published
  • The report at a permanent link, printable
Run the free check

If your setup is already sound, we refund you.

Before you touch your DNS zone

The real question isn't whether the report is worth its price. It's whether you risk breaking your email. Here is what the report does, and what it never does.

You stay in control

You apply the fixes yourself, in the order given. We never touch your DNS zone and never ask for credentials.

Incoming mail is never cut off

No fix touches your MX records: mail keeps arriving while you work. A DNS record is removed as fast as it is added.

What you already publish is kept

Where a value exists we keep it as is and only add what's missing. Every fix states what it changes, and what breaks if you reverse the order.

Questions

A free tester already gives me 10 out of 10. What do you add?

A score says a message looks legitimate. It doesn't say whether your SPF aligns, whether DKIM signs the domain you actually use, or what to write in your DNS zone. We give you the records.

Is this a subscription?

No. One payment, one domain, one report, one re-check included. Nothing to cancel, nothing to watch each month.

Why do you need the headers of a real message?

Your configuration says what you declared. The headers say what the receiving server concluded. The two side by side is what makes the report undeniable.

What if you find nothing to fix?

We say so, and we refund you. The check stays free.

Do I need an account?

No. Your address is asked once, at checkout, to deliver the report.

Your domain publishes something today. Let's see what.

The check names what's wrong, with what was read and when. The report gives the fixes, and the re-check.