mx2.mclaut.com has no CNAME records.
Question and response
Question
dig mx2.mclaut.com. NS
Answer
The response has no answer records.
Authority
mclaut.com. 559 SOA ns1.maklaut.lv. hostmaster.mclaut.com. 2015050906 10800 600 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0