webmail.sof-energiya.uz has no CNAME records.
Question and response
Question
dig webmail.sof-energiya.uz. NS
Answer
The response has no answer records.
Authority
sof-energiya.uz. 10707 SOA ns01.uzsci.net. narslanov.yandex.ru. 1753223887 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0