ns-a1.conoha.io has no MX records.
Question and response
Question
dig ns-a1.conoha.io. MX
Answer
The response has no answer records.
Authority
conoha.io. 600 SOA ns-a1.conoha.io. postmaster.conoha.io. 2022070400 3600 900 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0