mail232.mkt.commercial.hkt.com has no MX records.
Question and response
Question
dig mail232.mkt.commercial.hkt.com. MX
Answer
The response has no answer records.
Authority
hkt.com. 1800 SOA ns3.hkt.com. dnsadmin.imsbiz.com. 2026030601 3600 900 86400 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0