Mail-Relay.OECS.net.OECS.Net		DUNNO
0						REJECT Broadcast address in MX record or Helo command
10						REJECT Internal IP in MX record or Helo command
192.168					REJECT Internal IP in MX record or Helo command
172.16					REJECT Internal IP in MX record or Helo command
169.254					REJECT Internal IP in MX record or Helo command
224						REJECT Reserved IP in MX record or Helo command
240						REJECT Reserved IP in MX record or Helo command
248						REJECT Reserved IP in MX record or Helo command
dev.null				REJECT Null MX record or Helo command