$TTL 3600 @ IN SOA mybsd.cluster. root.mybsd.cluster. ( 20031227 ; Serial 3600 ; Refresh 900 ; Retry 3600000 ; Expire 3600 ) ; Minimum NS mybsd.cluster. MX 10 mybsd.cluster. Localhost A 127.0.0.1 cluster. A 192.168.1.1 note A 192.168.1.5 notebsd A 192.168.1.5