Example with one nameserver:


$TTL	86400
@  IN	SOA	 ns1.bogus25.com.	support.bogus25.com. (
				20010923; Serial
				10800	; Refresh after 3hrs
				3600	; Retry after 1 hr
				604800	; Expire in 1 week
				86400 ) ; Minimum ttl 1 day 
	                IN	NS	ns1.bogus25.com.
bogus25.com.    	IN  A	72.96.52.127
www               	IN	CNAME   bogus25.com.
ftp             	IN	CNAME	bogus25.com.
mail           		IN	A	72.96.52.127
					IN	MX	10	mail
bogus25.com.        IN	MX	10	mail.bogus25.com.


Example with two nameservers:

$TTL	86400
@  IN	SOA	 ns1.bogus25.com.	support.bogus25.com. (
				20010923; Serial
				10800	; Refresh after 3hrs
				3600	; Retry after 1 hr
				604800	; Expire in 1 week
				86400 ) ; Minimum ttl 1 day 
			IN	NS	ns1.bogus25.com.
			IN	NS	ns2.bogus25.com.
bogus25.com.    	IN	A	72.96.52.127
www               	IN	CNAME   bogus25.com.
ftp             	IN	CNAME	bogus25.com.
mail           		IN	A	72.96.52.127
					IN	MX	10	mail
bogus25.com.        IN	MX	10	mail.bogus25.com.