broadband-37.204-48-69.ip.moscow.rt.ru has no MX records.
Question and response
Question
dig broadband-37.204-48-69.ip.moscow.rt.ru. MX
Answer
The response has no answer records.
Authority
ip.moscow.rt.ru. 600 SOA ns1.ncnet.ru. noc.ncnet.ru. 2019071901 600 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0