32.4.90.116.smartservers.com.au has no MX records.
Question and response
Question
dig 32.4.90.116.smartservers.com.au. MX
Answer
The response has no answer records.
Authority
smartservers.com.au. 300 SOA ns1.digitalpacific.com.au. hostmaster.digitalpacific.com.au. 2026022400 86400 600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0