mx05.cesena.tv has no MX records.
Question and response
Question
dig mx05.cesena.tv. MX
Answer
The response has no answer records.
Authority
cesena.tv. 1800 SOA edward.ns.cloudflare.com. dns.cloudflare.com. 2395163843 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0