MX Record Query fails

string domain = "HomeTechnologySolutions.com";
int num1 = DnsQuery(ref domain, QueryTypes.DNS_TYPE_MX, QueryOptions.DNS_QUERY_BYPASS_CACHE, 0, ref ptr1, 0);
if (num1 != 0)
  {
    throw new Win32Exception(num1)
  }

> set type=mx
> hometechnologysolutions.com
Server:  dhcp.removedtoprotectedtheguilty.com
Address:  10.0.0.9

hometechnologysolutions.com
        primary name server = ns1.streetsimple.com
        responsible mail addr = hostmaster.streetsimple.com
        serial  = 11
        refresh = 900 (15 mins)
        retry   = 600 (10 mins)
        expire  = 86400 (1 day)
        default TTL = 3600 (1 hour)