$TTL 604800 @ SOA localhost. root.localhost. ( 1 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL NS localhost. MX 10 mail.jones.dk. MX 50 mail.homebase.dk. MX 50 mail.dgi-huset.dk. MX 50 mail.idaa.dk. MX 50 mail.haakansson.com. TXT "v=spf1 mx -all" mail A 192.168.222.250 ;80.166.186.182 TXT "v=spf1 a -all"