_spf.integracio.ru has no MX records.
Question and response
Question
dig _spf.integracio.ru. MX
Answer
The response has no answer records.
Authority
integracio.ru. 3600 SOA ns1.reg.ru. hostmaster.ns1.reg.ru. 1766605492 14400 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0