Information that is included in an email header includes all of the following except:

The correct answer is B. SMTP packet structure. SMTP packet structure (B) is not part of an email header - it belongs to the transport layer protocol itself, not the message metadata that travels with the email. Email headers are human-readable fields embedded in the message, while SMTP packet structure is a lower-level…

Question

Options

AWhen the message was composed
BSMTP packet structure
CName of receiving machine
DName of sending machine

How the community answered

(49 responses)

A
6% (3)
B
78% (38)
C
14% (7)
D
2% (1)

Explanation

SMTP packet structure (B) is not part of an email header - it belongs to the transport layer protocol itself, not the message metadata that travels with the email. Email headers are human-readable fields embedded in the message, while SMTP packet structure is a lower-level networking concept describing how data is transmitted between mail servers.

The distractors are all genuine header fields: A (timestamp) appears as the Date: field indicating when the message was composed; C (receiving machine) is captured in Received: lines showing each hop the message took; D (sending machine) also appears in Received: and From: header lines identifying the originating server.

Memory tip: Think of an email header like the outside of a physical envelope - it shows who sent it, who receives it, and when it was postmarked. SMTP is the postal truck that carries the envelope, and its internal mechanics never appear on the envelope itself.

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