mail.chaptech.com.au has no MX records.
Question and response
Question
dig mail.chaptech.com.au. MX
Answer
The response has no answer records.
Authority
chaptech.com.au. 300 SOA ns2.chaptech.com.au. domains.chaptech.com.au. 2026010701 10800 3600 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0