ip36.fastwebnet.it has no MX records.
Question and response
Question
dig ip36.fastwebnet.it. MX
Answer
The response has no answer records.
Authority
ip36.fastwebnet.it. 86400 SOA dns3.fastweb.it. dnsmaster.fastweb.it. 2019121000 10800 900 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0