a.nic.lv has no MX records.
Question and response
Question
dig a.nic.lv. MX
Answer
The response has no answer records.
Authority
lv. 1800 SOA a.nic.lv. dns.nic.lv. 1771756204 3600 900 1296000 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0