dm-1.zoominternet.net has no MX records.
Question and response
Question
dig dm-1.zoominternet.net. MX
Answer
The response has no answer records.
Authority
zoominternet.net. 300 SOA dm-1.zoominternet.net. inetoperations.zoominternet.net. 2026021101 1800 60 900 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0