Based on the example at http://en.wikipedia.org/wiki/Zone_file and explanation
at http://www.zytrax.com/books/dns/ch8/soa.html, put new expiry, refresh, etc.
intervals in the SOA record, partially to make changes quicker to make.
-$TTL 1D
-@ IN SOA ns root (
- 2013022403 ; Serial
- 28800 ; Refresh
- 14400 ; Retry
- 86400 ; Expire - 1 week
- 86400 ) ; Minimum
+$TTL 1h
+@ IN SOA ns root (
+ 2013051202 ; Serial
+ 4h ; slave refresh
+ 15m ; slave retry time in case of a problem
+ 4w ; slave expiration time
+ 1h ; maximum caching time in case of failed lookups (1 hour)
+ )
IN NS ns1.dehnerts.com.
; IN NS ns2.dehnerts.com.
IN NS ns1.sipb.org.
IN NS ns1.dehnerts.com.
; IN NS ns2.dehnerts.com.
IN NS ns1.sipb.org.