customer.gigaclear.net has no MX records.
Question and response
Question
dig customer.gigaclear.net. MX
Answer
The response has no answer records.
Authority
customer.gigaclear.net. 300 SOA ns2.gigaclear.com. engineering.gigaclear.com. 2025060601 3600 600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0