mail.hdcdatacentre.com has no MX records.
Question and response
Question
dig mail.hdcdatacentre.com. MX
Answer
The response has no answer records.
Authority
hdcdatacentre.com. 14400 SOA spkns01.towngastelecom.com. dnsadmin.hdcdatacentre.com. 2025103001 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1024, xrcode 0, version 0, flags 0