Choose the main role of a Mail Transfer Agent in an email system.
Which description is appropriate?
An MTA receives, routes, and forwards mail to another mail system or local delivery service.
Detailed explanation
Correct. MTA handles reception, routing, and forwarding.
Correct. MTA handles reception, routing, and forwarding.
Incorrect. Editing a message is mainly an MUA role.
Incorrect. Editing a message is mainly an MUA role.
Incorrect. Zone data is managed by a DNS server.
Incorrect. Zone data is managed by a DNS server.
Incorrect. Merely displaying a mailbox is a mail-reader role.
Incorrect. Merely displaying a mailbox is a mail-reader role.
Try it yourself
An example you can run in a temporary verification environment.
printf '%s\n' 'MUA -> MTA -> MTA -> local delivery'Expected result
MUA -> MTA -> MTA -> local deliveryKey points
- Mail transfer agent
- MUA is user interface
- Uses SMTP
Notes
- Environment: 概念flowの表示のみ
- Command output formatting can vary slightly by distribution or tool version.
- Run the example in a temporary directory or process when possible.
Foundation review
Read the scope first
Check whether the command acts on the current shell, a new process, an existing process, or a file.
Verify the observable result
Use the supplied command and compare the output with the expected result.