dedicated.clara.ne.jp has no MX records.
Question and response
Question
dig dedicated.clara.ne.jp. MX
Answer
The response has no answer records.
Authority
dedicated.clara.ne.jp. 900 SOA dedicated.clara.ne.jp. hostmaster.dedicated.clara.ne.jp. 2022111701 3600 900 1209600 1200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0