nocsv015.tocn.ne.jp has no MX records.
Question and response
Question
dig nocsv015.tocn.ne.jp. MX
Answer
The response has no answer records.
Authority
tocn.ne.jp. 300 SOA nocsv001.tocn.ne.jp. staff.tocn.ad.jp. 2025101702 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0