ns3.marie.sh has no MX records.
Question and response
Question
dig ns3.marie.sh. MX
Answer
The response has no answer records.
Authority
marie.sh. 3600 SOA ns0.marie.sh. postmaster.marie.sh. 2026022601 86400 7200 1209600 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0