ns1.gigaclear.net has no MX records.
Question and response
Question
dig ns1.gigaclear.net. MX
Answer
The response has no answer records.
Authority
gigaclear.net. 300 SOA ns2.gigaclear.com. engineering.gigaclear.com. 2025011603 14400 3600 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0