corp-mta2.ipreo.com has no MX records.
Question and response
Question
dig corp-mta2.ipreo.com. MX
Answer
The response has no answer records.
Authority
ipreo.com. 900 SOA ns2.ihsmarkit.com. hostmaster.ihsmarkit.com. 2019121230 900 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0