spf.email-hosting.net.au has no MX records.
Question and response
Question
dig spf.email-hosting.net.au. MX
Answer
The response has no answer records.
Authority
email-hosting.net.au. 86400 SOA ns1.corp.ventraip.net.au. servers.vip-servers.com. 2026021704 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0