Chapter 15 - SMTP

Question 1

Which protocol is used to send email messages?

Answer 1

SMTP

Question 2

What is a MTA?

Answer 2

A Message Transfer Agent is software which routes email between machines. AKA “Email Server”.

Question 3

What is a MUA?

Answer 3

A Mail User Agent is client software which accesses a mail server.

Question 4

If you enter the “ehlo” command to a SMTP server, and get a error response, what can you deduct?

Answer 4

That server does not support extended smtp.

Question 5

While composing an email using Telnet, what command do you use to specify the recipient of the email?

Answer 5

RCPT

Question 6

When composing an email using Telnet, after you’ve finished composing your message how do you signal the SMTP server that you’re done?

Answer 6

A single period.

Question 7

What is the function of the NOOP command on a SMTP server?

Answer 7

That command holds no purpose on a SMTP server.

Question 8

Which response code should you get if you successfully connected to a SMTP server using Telnet?

Answer 8

220

Question 9

True or False: SMTP Auth is encrypted

Answer 9

False

Question 10

True or False: STARTTLS is encrypted

Answer 10

True