alkaid.starcon.com has no MX records.
Question and response
Question
dig alkaid.starcon.com. MX
Answer
The response has no answer records.
Authority
starcon.com. 300 SOA ns1.starcon.com. admin.starcon.com. 2025020400 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0