ns.lla-cr.com has no MX records.
Question and response
Question
dig ns.lla-cr.com. MX
Answer
The response has no answer records.
Authority
lla-cr.com. 300 SOA ns.lla-cr.com. root.lla-cr.com. 2023040101 14400 3600 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0