u-strasbg.fr has no MX records.
Question and response
Question
dig u-strasbg.fr. MX
Answer
The response has no answer records.
Authority
u-strasbg.fr. 1800 SOA ns1.u-strasbg.fr. hostmaster.u-strasbg.fr. 2026022701 3600 3600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0