Searches DNS for MX records corresponding to hostname. Returns TRUE if any records are found; returns
FALSE if no records were
found or if an error occurred.
A list of the MX records found is placed into the array
mxhosts. If the weight array is given, it will be
filled with the weight information gathered.
See also checkdnsrr(),
gethostbyname(),
gethostbynamel(),
gethostbyaddr(), and the
named(8) manual page.