lookUpDNS

Sends a lookup query to stated host and returns the result

drudr lookUpDNS 
	( string queryType, 
	  string queryString, 
	  string host, 
	  int port, 
	  int timeout, 
	  int retries )

Parameter	Description
`queryType`	The query type to be used, e g NAPTR, AAA, CNAME, etc. For full list, see http://www.dnsjava.org/doc/org/xbill/DNS/Type.html.
`queryString`	The string to be used in the query.
`host`	The host that should be used for the lookup.
`port`	The port that should be used for the lookup.
`timeout`	The number of milliseconds to wait before timeout.
`retries`	The number of retries you want to make before returning an error code and proceeding.
Returns	A `DNSResponseUDR` containing the lookup result (`list<DNSRecordUDRs>`), status code (`int`) and error message (`string`)

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DNS Lookup Function(3.1)