NONEXECUTABLE
Listing 1: Example Zone File for the Example.com Domain

	example.com.   IN SOA  dns.example.com.  dnsowner.example.com.  (
	                     19991005   ; serial # (date format)
	                        10800   ; refresh (3 hours)
	                         3600   ; retry (1 hour)
	                       604800   ; expire (1 week)
	                        86400)  ; TTL (1 day)
	example.com.   IN NS   dns.example.com.
	               IN NS   ns1.ispexample.net.
	example.com.   IN MX   20  mail.example.com.
	               IN MX   40  mail.ispexample.com.
	dns.example.com.        IN A      192.168.210.2
	mail.example.com.       IN A      192.168.210.4
	www.example.com.        IN A      192.168.210.5
	ftp.example.com.        IN CNAME  www.example.com.