mx1.surfi.fr has no MX records.
Question and response
Question
dig mx1.surfi.fr. MX
Answer
The response has no answer records.
Authority
surfi.fr. 300 SOA ns1.amen.fr. root.amen.fr. 2026011301 86400 7200 2592000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0