mta90.86.mdrctr.com has no MX records.
Question and response
Question
dig mta90.86.mdrctr.com. MX
Answer
The response has no answer records.
Authority
mdrctr.com. 1800 SOA ns1.antevenio.com. sistemas.antevenio.com. 2024096515 28800 7200 2678400 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0