mail.max-com.awk.jp has no CNAME records.
Question and response
Question
dig mail.max-com.awk.jp. NS
Answer
The response has no answer records.
Authority
max-com.awk.jp. 160 SOA ns.max-com.awk.jp. pj_dev.max-com.co.jp. 1752219618 14400 60 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0