_spf.mikrotec.com has no CNAME records.
Question and response
Question
dig _spf.mikrotec.com. NS
Answer
The response has no answer records.
Authority
mikrotec.com. 300 SOA ns1.mis.net. noc.mis.net. 2025041801 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0