test1.luminamath.itassist.ro has no MX records.
Question and response
Question
dig lb1-992285169.eu-central-1.elb.amazonaws.com. MX
Answer
The response has no answer records.
Authority
eu-central-1.elb.amazonaws.com. 60 SOA ns-1689.awsdns-19.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 60
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0