mail-west.es.net has no MX records.
Question and response
Question
dig mail-west.es.net. MX
Answer
The response has no answer records.
Authority
es.net. 600 SOA ns1.es.net. hostmaster.es.net. 2026026200 3600 3600 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0