vm.netdesignhost.com has no MX records.
Question and response
Question
dig vm.netdesignhost.com. MX
Answer
The response has no answer records.
Authority
vm.netdesignhost.com. 3600 SOA www.netdesignhost.com. contact.netdesignhost.com. 2009082652 900 600 86400 3600
Additional
. 0 OPT ; payload 4000, xrcode 0, version 0, flags 0