The Retry property specifies the number of times, per
nameserver, that the control attempts to resolve a hostname or
address. If attempts to query a nameserver fail, the control waits a
period of time and then resubmits the query. As the number of retries
increase, the longer the period of time the control waits to receive
a response before attempting the query using another nameserver.
The default number of retries is four, with a minimum value of one
and a maximum value of eight.