s63-legacy.web-servers.com.au has no MX records.
Question and response
Question
dig s63-legacy.web-servers.com.au. MX
Answer
The response has no answer records.
Authority
web-servers.com.au. 60 SOA ns1.panthur.net.au. root.s1.web-servers.com.au. 2025081500 86400 7200 1209600 60
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0