srv04.area.ba.cnr.it has no MX records.
Question and response
Question
dig srv04.area.ba.cnr.it. MX
Answer
The response has no answer records.
Authority
area.ba.cnr.it. 86400 SOA dns2.ba.cnr.it. postmaster.area.ba.cnr.it. 2025110501 3600 1800 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0