smtp.pre.tiscaliservices.it has no MX records.
Question and response
Question
dig smtp.pre.tiscaliservices.it. MX
Answer
The response has no answer records.
Authority
pre.tiscaliservices.it. 43200 SOA barakus.tiscali.com. nsadmin.it.tiscali.com. 2017091200 86400 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0