mail.cw-networks.net has no MX records.
Question and response
Question
dig mail.cw-networks.net. MX
Answer
The response has no answer records.
Authority
cw-networks.net. 604800 SOA ns0.cw-networks.net. hostmaster.cw-networks.net. 2022120801 604800 86400 2419200 604800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0