This file is used to configure whether Asterisk should perform DNS lookups on a regular basis, and how often those lookups should be performed.

Syntax of the config file is as follows:

[general]
;enable=yes             ; enable creation of managed DNS lookups
                        ;   default is 'no'
;refreshinterval=1200   ; refresh managed DNS lookups every <n> seconds
                        ;   default is 300 (5 minutes)