proxy.burgasnet.com has no MX records.
Question and response
Question
dig proxy.burgasnet.com. MX
Answer
The response has no answer records.
Authority
burgasnet.com. 3600 SOA ns.burgasnet.com. root.burgasnet.com. 2026012749 3600 1300 3600000 43200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0