spf.eudonet.com has no CNAME records.
Question and response
Question
dig spf.eudonet.com. NS
Answer
The response has no answer records.
Authority
eudonet.com. 2337 SOA ns1.lerelaisinternet.com. root.nordnet.fr. 2026021602 21600 3600 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0