relay.nices.studio has no MX records.
Question and response
Question
dig relay.nices.studio. MX
Answer
The response has no answer records.
Authority
nices.studio. 3600 SOA ns1.name.com. hostmaster.nsone.net. 1732892905 43200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0