Red Hat LINUX 7.2 Reference Manual page 236

236
Seconds
3600
10800
21600
43200
86400
259200
604800
The following example demonstrates how a basic SOA resource record might look.
Figure 14–16 Example SOA records
@
Zone File Examples
Seen individually, the directives and resource records can be difficult to grasp. However, everything
makes much more sense when it is placed together in a common file.
In Figure 14–17, An example of a basic zone file, a very basic zone file is shown.
Figure 14–17 An example of a basic zone file
$ORIGIN domain.com
$TTL 86400
@
IN SOA
IN SOA dns1.domain.com.
2001062501 ; serial
21600
3600
604800
86400 )
IN NS dns1.domain.com.
IN NS dns2.domain.com.
IN MX 10
Chapter 14:Berkeley Internet Name Domain (BIND)
Other Time Units
1H
3H
6H
12H
1D
3D
1W
dns1.domain.com.
2001062501 ; serial
21600 ; refresh after 6 hours
3600 ; retry after 1 hour
604800 ; expire after 1 week
86400 ) ; minimum TTL of 1 day
; refresh after 6 hours
; retry after 1 hour
; expire after 1 week
; minimum TTL of 1 day
mail.domain.com.
hostmaster.domain.com. (
hostmaster.domain.com. (