reverse.odns.fr has no MX records.
Question and response
Question
dig reverse.odns.fr. MX
Answer
The response has no answer records.
Authority
reverse.odns.fr. 86400 SOA ns1.o2switch.net. systemshl.o2switch.fr. 2023021500 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0