source ($HOST_MAILRELAY_V4 $HOST_NAGIOS_V4) proto tcp dport 25 ACCEPT;
source ($HOST_MUNIN_V4 $HOST_NAGIOS_V4) proto tcp dport 4949 ACCEPT;
source ($HOST_NAGIOS_V4) proto tcp dport 5666 ACCEPT;
source ($HOST_MAILRELAY_V4 $HOST_NAGIOS_V4) proto tcp dport 25 ACCEPT;
source ($HOST_MUNIN_V4 $HOST_NAGIOS_V4) proto tcp dport 4949 ACCEPT;
source ($HOST_NAGIOS_V4) proto tcp dport 5666 ACCEPT;