A company runs a Postfix server that must accept mail for its domain from the internet, but also must allow its remote employees (who are not on the office network) to send mail through the server. The company wants to prevent open relaying. Which configuration is the most appropriate?

Disable SASL and rely on IP-based restrictions only.

Set mynetworks to the office network and enable SASL authentication for remote users, with smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination.

Set smtpd_relay_restrictions = reject_unauth_destination only.

Set mynetworks to 0.0.0.0/0 to allow all remote users to relay.

What is the purpose of a .forward file in a user's home directory?

To store the user's password for SMTP authentication

To set the user's email signature

To specify an alternate location for the user's mailbox

To redirect incoming mail to another address or program

A user sends an email from their desktop MUA to a colleague on a different company's mail server. Which sequence correctly describes the flow of the message?

MUA → SMTP → recipient's MTA → sender's MTA → MDA → recipient's mailbox

MUA → MDA → sender's MTA → SMTP → recipient's MTA → recipient's mailbox

MUA → POP3 → sender's MTA → IMAP → recipient's MTA → MDA → recipient's mailbox

MUA → SMTP → sender's MTA → SMTP → recipient's MTA → MDA → recipient's mailbox

LPI LPIC-1:Linux Administrator (101-500)

Domain 8Objective 3

108.3 Mail Transfer Agent (MTA) Basics LPIC-1 Practice Questions (Page 4)

Part of the Topic 108: Essential System Services domain, which makes up ~9% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~3–5 in this domain), expect 1–1 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

9concepts

Questions 16–20

16expert · medium
A company runs a Postfix server that must accept mail for its domain from the internet, but also must allow its remote employees (who are not on the office network) to send mail through the server. The company wants to prevent open relaying. Which configuration is the most appropriate?
Select an answer first
17foundation · easy
Which MTA is known for its use of a single main configuration file typically located at /etc/sendmail.cf?
Select an answer first
18foundation · easy
What is the purpose of a .forward file in a user's home directory?
Select an answer first
19application · easy
A user sends an email from their desktop MUA to a colleague on a different company's mail server. Which sequence correctly describes the flow of the message?
Select an answer first
20foundation · easy
Which file is commonly used to define email aliases that map virtual or alternate addresses to local users?
Select an answer first

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108.3 Mail Transfer Agent (MTA) Basics LPIC-1 Practice Questions (Page 4)

Questions 16–20

A company runs a Postfix server that must accept mail for its domain from the internet, but also must allow its remote employees (who are not on the office network) to send mail through the server. The company wants to prevent open relaying. Which configuration is the most appropriate?

Which MTA is known for its use of a single main configuration file typically located at /etc/sendmail.cf?

What is the purpose of a .forward file in a user's home directory?

A user sends an email from their desktop MUA to a colleague on a different company's mail server. Which sequence correctly describes the flow of the message?

Which file is commonly used to define email aliases that map virtual or alternate addresses to local users?

Keep studying — Topic 108: Essential System Services