mx1.inbox.lv has no MX records.
Question and response
Question
dig mx1.inbox.lv. MX
Answer
The response has no answer records.
Authority
inbox.lv. 2827 SOA ns1.inbox.lv. support.inbox.lv. 2026012300 172800 2048 1048576 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0