Comment utiliser : Email Header Analyzer
- Open the email and copy its full headers: in Gmail use ⋮ → Show original; in Outlook File → Properties → Internet headers; in Apple Mail View → Message → All Headers.
- Paste them into the box — the analysis appears immediately.
- Read the summary: sender, the SPF / DKIM / DMARC verdicts and any warnings about spoofing.
- Look at the hops from first to last server to find where a delay happened, and the originating IP.
Reading email headers
Every mail server that handles a message adds a Received: line at the top, so the headers list the journey in reverse. The analyzer turns them around, works out the time between each hop and highlights slow ones — a delay of minutes usually points at a spam filter, greylisting or a queue on that server.
| Check | What it proves |
|---|---|
| SPF | The sending server’s IP is allowed by the sender domain’s DNS record |
| DKIM | The message was signed by the domain in d= and wasn’t changed on the way |
| DMARC | SPF or DKIM passed for the same domain as the visible From address — the key anti-spoofing check |
Signs of phishing
Be careful when DMARC fails, when the Reply-To or Return-Path uses a different domain than From, or when the display name claims to be a company the address doesn’t match. To check your own domain’s records, use the Email DNS Checker.
Aussi recherché comme : email header parser, analyze email headers, email header checker, trace email, email delay analyzer, check spf dkim dmarc, find email sender ip, message header analyzer.
Outils complémentaires : Email Header Analyzer
- DNS Lookup — Query all common DNS record types for a domain in one go, with TTLs, sorted MX records and an SPF/DMARC email-authentication summary.
- Recherche WHOIS — Saisissez un nom de domaine pour afficher son registraire, ses dates de création et d'expiration, son ancienneté, ses codes d'état, ses serveurs de noms et ses informations DNSSEC — ou une adresse IP pour identifier le réseau et l'organisation qui en sont propriétaires.
- Quelle est mon adresse IP ? — Votre adresse IP publique et toutes les informations que votre navigateur communique aux sites web que vous visitez : agent utilisateur, résolution d'écran, langue, fuseau horaire et en-têtes de requête.
- HTTP Header Checker — Fetch any URL and see exactly what the server sends back — status code, redirect chain and every response header, with a plain-English explanation of the ones that matter for SEO, caching and security.