Email header analyzer
Email header analyzer: paste the full headers di a message a see who sent it, the servers it passed through, delays tra hops e the authentication Risultati.
Analysis happens a your browser. Nothing è uploaded. In Gmail choose “Show original”, a Outlook open the message properties.
Informazioni su Email header analyzer
Email header analyzer: paste the full headers di a message a see who sent it, the servers it passed through, delays tra hops e the authentication Risultati.
Fa parte della sezione «Dati e reti» di SmartCalcy. Funziona nel tuo browser senza account, usa la tua valuta e le tue unità (modificabili in cima alla pagina) e fornisce stime solo a scopo informativo, quindi verifica le indicazioni ufficiali prima di fidarti di un risultato.
Come usare il Email header analyzer
Cosa calcola e quando usarlo
Reads the full headers di an email e shows the route it took, the delay A Ciascuno server, e the SPF, DKIM e DMARC results. It also flags signs di spoofing, such as a sending domain that differs from the From address. Everything happens a your browser.
Come si usa, passo dopo passo
- Open the email’s raw headers: a Gmail choose “Show original”, a Outlook open the message properties.
- Copia everything above the Messaggio body e paste it into the scatola.
- Read the authentication Risultati e the route, oldest hop first.
- Check the warnings per domain mismatches.
Cosa significa ogni dato
- Email headers – The complete header block, starting with righe such as Received: e Dalle:.
Come leggere i risultati
- Authentication – SPF, DKIM e DMARC Risultati taken dalle the receiving server’s Authentication-Results header.
- Messaggio Dettagli – Da, A, Data, Message-ID, Return-Path, Reply-To e mailer.
- Route – Ciascuno server hop, its address e the Ora added tra hops.
- Warnings – Domain mismatches e failed checks.
La formula
Received headers are added at the top by each server, so they are read bottom a top. The delay at a hop è its timestamp minus the previous hop’s. Total delivery time è the last timestamp minus the first.
Un esempio pratico
A Messaggio with spf=pass, dkim=pass e dmarc=pass sent from the same domain as its From address, delivered a 5 seconds across 2 hops, shows no warnings.
Ipotesi e limiti
- The receiving server’s Authentication-Results header è trusted. Earlier Received righe barattolo be forged by a sender.
- Ora stamps use Ciascuno server’s own clock, so small negative delays barattolo appear.
- Niente è uploaded.
Errori comuni
- Pasting only part di the headers.
- Trusting the From name. It è easy a fake, so check the domain e authentication Risultati.
- Treating a failed SPF as proof di fraud. Forwarded mail often fails SPF.
Domande frequenti
How do I Trova the headers a Gmail?
Open the Messaggio, choose the three-dot menu, then “Mostra Originale”, e Copia the header text.
What do SPF, DKIM e DMARC Media?
SPF checks the sending server. DKIM checks a signature on the Messaggio. DMARC says what a do when they do not match the Dalle domain.
Barattolo headers be faked?
Righe added by the sender barattolo, but the topmost Received righe e Authentication-Results dalle your own provider are reliable.
Is my email uploaded?
No. The headers are analysed a your browser.