_spf.blix.com has no MX records.
Question and response
Question
dig _spf.blix.com. MX
Answer
The response has no answer records.
Authority
blix.com. 60 SOA ns1.blix.com. blix.com. 2026022402 28800 7200 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0