What command should be used to print a listing of email in the system's mail queue?

The mailq command prints the list of messages that are in the mail queue. The mail queue is where

outgoing mail is stored until a receiving server connection is available. The mailq command is the

same as the sendmail -bp command, which also prints the mail queue. The mailq command is part of

the topic 108.3: Mail transfer agent (MTA) basics, which is one of the objectives of the LPI Linux

Administrator - 102 exam12. Reference: 1: https://learning.lpi.org/en/learning-materials/102-500/ 2:

https://www.lpi.org/our-certifications/exam-102-objectives/