s17.wpxhosting.com has no MX records.
Question and response
Question
dig s17.wpxhosting.com. MX
Answer
The response has no answer records.
Authority
s17.wpxhosting.com. 38400 SOA ns40.wpxhosting.com. root.s17.wpxhosting.com. 1765279435 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0