When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?
A. All traffic to localhost must always be allowed
B. It doesn't matter...
Which Postfix command can be used to rebuild all of the alias database files with a single invocation and without the need for any command line arguments?
A. makealiases
B. newaliases
C. postalia...
A host, called lpi, with the MAC address 08:00:2b:4c:59:23 should always be given the IP address of 192.168.1.2 by a DHCP server running ISC DHCPD.
Which of the following configurations will achiev...
What is the name of the Dovecot configuration variable that specifies the location of user mail?
A. mbox
B. mail_location
C. user_dir
D. maildir
E. user_mail_dir
It has been discovered that the company mail server is configured as an open relay. Which of the following actions would help prevent the mail server from being used as an open relay while maintaining...