gl13.gigas.com has no MX records.
Question and response
Question
dig gl13.gigas.com. MX
Answer
The response has no answer records.
Authority
gigas.com. 300 SOA ns01.gigas.com. hostmaster.gigas.com. 2026022100 1200 600 1209600 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0