312-49 Question #315: Real Exam Question with Answer & Explanation

The correct answer is C: Simon1.state.ok.gov.us. Email headers are read bottom-up to trace origin: the first 'Received:' header added (the bottommost one) represents the originating mail server â€” the one that first injected the message into the SMTP chain. Each subsequent mail server prepends its own 'Received:' header as the

Submitted by carlos_mx· Apr 18, 2026Network Forensics

Question

In the following email header, where did the email first originate from?

Options

ASomedomain.com
BSmtp1.somedomain.com
CSimon1.state.ok.gov.us
DDavid1.state.ok.gov.us

Explanation

Email headers are read bottom-up to trace origin: the first 'Received:' header added (the bottommost one) represents the originating mail server â€” the one that first injected the message into the SMTP chain. Each subsequent mail server prepends its own 'Received:' header as the message is relayed. Simon1.state.ok.gov.us appears as the bottom-most Received entry, meaning it was the first server to handle the email, making it the true point of origin.

Topics

#Email Header Analysis#Network Forensics#Email Tracing#SMTP Protocol

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