mail2.restartenergy.ro has no MX records.
Question and response
Question
dig mail2.restartenergy.ro. MX
Answer
The response has no answer records.
Authority
restartenergy.ro. 1800 SOA courtney.ns.cloudflare.com. dns.cloudflare.com. 2397493901 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0