Rebuilding the aliases database | LinuC Level 1 102 Exam original practice question

1.09.3Basic

After editing /etc/aliases, rebuild the database consulted by the MTA.

Which command is appropriate?

Hint 1: Focus on mail roles

Separate alias expansion, user forwarding, message submission, queue inspection, and MTA routing roles.

Hint 2: Key terms

Review the short definitions of alias expansion, forwarding, submission, queueing, and delivery involved.

newaliases: A command commonly used to rebuild the lookup database after alias changes.
Alias database: A lookup structure used by an MTA to resolve local aliases efficiently.
mailq: A command that displays messages waiting in the mail queue.
logrotate: A utility that rotates and manages generations of log files.

Detailed explanation

Incorrectmailq

Incorrect. mailq lists the delivery queue.

Incorrectmail

Incorrect. mail is a user mail command.

Correctnewaliases

Correct. newaliases rebuilds the alias database.

Incorrectlogrotate

Incorrect. logrotate manages log generations.

An example you can run in a temporary verification environment.

newaliases --help 2>&1 | sed -n '1,8p'

newaliasesの使用方法またはMTA互換command情報

Foundation review

A mail transfer agent that accepts, routes, and queues messages.

Rules that map a local address to one or more delivery destinations.

Temporary storage for messages waiting to be delivered or retried.

Question IDKL-102-1109

Environmentnewaliases help / database更新なし

Last technical review2026-08-13

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