ns3.qvc.com has no MX records.
Question and response
Question
dig ns3.qvc.com. MX
Answer
The response has no answer records.
Authority
qvc.com. 60 SOA ns3.qvc.com. networktelecomadministration.qvc.com. 2016051006 10800 3600 2419200 60
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0