senderb128.zcsend.jp has no MX records.
Question and response
Question
dig senderb128.zcsend.jp. MX
Answer
The response has no answer records.
Authority
zcsend.jp. 600 SOA NS1.ZOHOCORP.COM. dnsadmin.vtitan.com. 2026013100 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0