sender.hostex.lt has no MX records.
Question and response
Question
dig sender.hostex.lt. MX
Answer
The response has no answer records.
Authority
hostex.lt. 600 SOA ns1.data.lt. hostmaster.hostex.lt. 2025122200 28800 14400 3600000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0