ns3.wateen.net has no MX records.
Question and response
Question
dig ns3.wateen.net. MX
Answer
The response has no answer records.
Authority
wateen.net. 86400 SOA ns3.wateen.net. postmaster.wateen.net. 2008030738 14400 200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0