spf.verixi.com has no MX records.
Question and response
Question
dig spf.verixi.com. MX
Answer
The response has no answer records.
Authority
verixi.com. 86400 SOA dns1.verixi.net. hostmaster.verixi.net. 2025040100 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0