46-249-95-114.ip.btc-net.bg has no MX records.
Question and response
Question
dig 46-249-95-114.ip.btc-net.bg. MX
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0