filter.au.ds.network has no MX records.
Question and response
Question
dig filter.au.ds.network. MX
Answer
The response has no answer records.
Authority
au.ds.network. 3600 SOA names1.ds.network. dns.ds.network. 2026021302 7200 120 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0