_spf.enforta.com has no MX records.
Question and response
Question
dig _spf.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