255.93.77.ip.retelit.net has no MX records.
Question and response
Question
dig 255.93.77.ip.retelit.net. MX
Answer
The response has no answer records.
Authority
255.93.77.ip.retelit.net. 86400 SOA ns1.retelit.net. hostmaster.ns.kpnqwest.it. 2023122401 86400 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0