mx1.pdlsk.cifra1.ru has no MX records.
Question and response
Question
dig mx1.pdlsk.cifra1.ru. MX
Answer
The response has no answer records.
Authority
pdlsk.cifra1.ru. 600 SOA ns1.almatel.ru. noc.almatel.ru. 2019090600 7200 3600 3600000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0