ipv6.uvsq.fr has no MX records.
Question and response
Question
dig ipv6.uvsq.fr. MX
Answer
The response has no answer records.
Authority
ipv6.uvsq.fr. 259200 SOA soleil.uvsq.fr. hostmaster.soleil.uvsq.fr. 202506051 21600 3600 2592000 259200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0