cust.waycom.net has no MX records.
Question and response
Question
dig cust.waycom.net. MX
Answer
The response has no answer records.
Authority
cust.waycom.net. 300 SOA ns1.waycom.net. noc.waycom.net. 2026020601 86400 7200 3600000 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0