ns2-do1.gwhc.net has no MX records.
Question and response
Question
dig ns2-do1.gwhc.net. MX
Answer
The response has no answer records.
Authority
gwhc.net. 600 SOA ns1.gwhc.net. root.gwhc.net. 2026011403 3600 3600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0