_spf.orange-business.fr has no MX records.
Question and response
Question
dig _spf.orange-business.fr. MX
Answer
The response has no answer records.
Authority
orange-business.fr. 300 SOA ns1.lerelaisinternet.com. root.nordnet.fr. 2013022165 300 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0