chatwoot.vpsville.ru has no MX records.
Question and response
Question
dig chatwoot.vpsville.ru. MX
Answer
The response has no answer records.
Authority
vpsville.ru. 3600 SOA ns1.vpsville.ru. admin.vpsville.ru. 2980448937 10800 900 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0