11.ps33010.ciberserver.com has no MX records.
Question and response
Question
dig 11.ps33010.ciberserver.com. MX
Answer
The response has no answer records.
Authority
ps33010.ciberserver.com. 86400 SOA ns1.ciberserver.com. status.ciberconceito.com. 2021111800 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0