mail.enforta.com has no MX records.
Question and response
Question
dig mail.enforta.com. MX
Answer
The response has no answer records.
Authority
enforta.com. 3600 SOA ns8.ertelecom.ru. noc.ertelecom.ru. 2025091599 10800 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0