5-152-161-97.sinersio.com has no MX records.
Question and response
Question
dig 5-152-161-97.sinersio.com. MX
Answer
The response has no answer records.
Authority
sinersio.com. 300 SOA ns1.sinersio.com. postmaster.sinersio.com. 2025061102 600 600 3600000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0