ipreomail.com has no MX records.
Question and response
Question
dig ipreomail.com. MX
Answer
The response has no answer records.
Authority
ipreomail.com. 900 SOA ns1.ihsmarkit.com. hostmaster.ihsmarkit.com. 2019120817 900 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0