An XCCDF Group - A logical subset of the XCCDF Benchmark
smtpd_recipient_restrictions
permit_mynetworks
mynetworks
reject_unauth_destination
/etc/postfix/main.cf
mynetworks_style = subnet
my_networks_style
mynetworks_style = host
mynetworks = 10.0.0.0/16, 192.168.1.0/24, 127.0.0.1