DNS File Examples¶
Zone File¶
example.txt:
$ORIGIN example.com. ; designates the start of this zone file in the namespace
$TTL 1h ; default expiration time of all resource records without their own TTL value
example.com. IN SOA ns1.example.com. username.example.com. (
2007120710 ; serial number of this zone file
1d ; slave refresh (1 day)
2h ; slave retry time in case of a problem (2 hours)
4w ; slave expiration time (4 weeks)
1h ; maximum caching time in case of failed lookups (1 hour)
)
example.com. NS ns ; ns.example.com is a nameserver for example.com
example.com. MX 10 mail.example.com. ; mail.example.com is the mailserver for example.com
@ MX 20 mail2.example.com. ; equivalent to above line, "@" represents zone origin
@ MX 50 mail3 ; equivalent to above line, but using a relative host name
example.com. A 127.0.0.1 ; IPv4 address for example.com
@ A 127.0.0.2 ; IPv4 address for example.com
@ A 127.0.0.3 ; IPv4 address for example.com
@ A 127.0.0.4 ; IPv4 address for example.com
AAAA 2001:db8:10::1 ; IPv6 address for example.com
ns A 127.0.0.1 ; IPv4 address for ns.example.com
AAAA 2001:db8:10::2 ; IPv6 address for ns.example.com
www CNAME example.com. ; www.example.com is an alias for example.com
wwwtest CNAME www ; wwwtest.example.com is another alias for www.example.com
mail A 127.0.0.1 ; IPv4 address for mail.example.com,
; any MX record host must be an address record
; as explained in RFC 2181 (section 10.3)
mail2 A 127.0.0.1 ; IPv4 address for mail2.example.com
mail3 A 127.0.0.1 ; IPv4 address for mail3.example.com
mail TXT "v=spf1 -all" ; SPF record
mail2 TXT "v=spf1 -all" ; SPF record
mail3 TXT "v=spf1 -all" ; SPF record