LFCS Question #556: Real Exam Question with Answer & Explanation

The correct answer is C: mailq. The mailq command is used to display the contents of the mail queue on a system, listing messages awaiting delivery by the mail transfer agent.

Submitted by kwame.gh· Apr 18, 2026Service Configuration

Question

Which of the following commands should be used to print a listing of emails in the system's mail queue?

Options

Asendmail -l
Blpq
Cmailq
Dmlq

Explanation

The mailq command is used to display the contents of the mail queue on a system, listing messages awaiting delivery by the mail transfer agent.

Common mistakes.

A. sendmail -l is not a standard command or option to list the mail queue; sendmail itself is a Mail Transfer Agent.
B. lpq is used to examine the spool queue for printing jobs, not email messages.
D. mlq is not a standard command for displaying the mail queue.

Concept tested. Linux mail queue management

Reference. https://man7.org/linux/man-pages/man8/mailq.8.html

Topics

#Mail queue#Email management#System commands

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