What command should be used to print a listing of email in the system's mail queue?
Which of the following details is NOT provided in any output from the netstat utility?
Which file, when using Sendmail or a similar MTA system, will allow a user to redirect all their mail to another address and is configurable by the user themselves?
Which option in the /etc/ntp.conf file specifies an external NTP source to be queried for time information?
(Specify ONLY the option without any values or parameters.)