| SYNOPSIS | 
#include <dkim.h>
int dkim_dns_init(
	DKIM_LIB *libopendkim)
);
Initializes the DNS resolver to be used by the library.  This in turn calls
either the compiled-in default or the replacement provided by a call to
dkim_dns_set_init().
This is automatically called if the resolver has not yet been initialized and
the library needs to perform a DNS lookup. | 
|---|
| DESCRIPTION | 
| Called When | dkim_dns_init() can be called at any time.  It always returns
DKIM_DNS_SUCCESS if the resolver was already initialized. |  | 
|---|
| ARGUMENTS | 
    | Argument | Description | 
|---|
 | libopendkim | The library instantiation handle, returned by
        dkim_init(). |  | 
|---|
| RETURN VALUES | 
DKIM_DNS_SUCCESS -- successful operation
DKIM_DNS_INVALID -- already initialized
DKIM_DNS_ERROR -- an error occurred
 | 
| NOTES |  |