$TTL    86400

@           IN SOA bind.ilnmors.internal. mail.ilnmors.internal. (
                2026021201 ; serial
                3600       ; refresh (1 hour)
                1800       ; retry (30 minutes)
                604800     ; expire (1 week)
                86400      ; minimum (1 day)
            )
            IN      NS      bind.ilnmors.internal.
1           IN      PTR     fw.ilnmors.internal.
2           IN      PTR     blocky.ilnmors.internal.
3           IN      PTR     bind.ilnmors.internal.
10          IN      PTR     vmm.ilnmors.internal.
11          IN      PTR     infra.ilnmors.internal.
12          IN      PTR     auth.ilnmors.internal.
13          IN      PTR     app.ilnmors.internal.