bdvision.ipreo.com has no MX records.
Question and response
Question
dig bdvision.ipreo.com. MX
Answer
The response has no answer records.
Authority
bdvision.ipreo.com. 900 SOA ns1.ihsmarkit.com. hostmaster.ihsmarkit.com. 2019120808 900 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0