fornex.ninja has no MX records.
Question and response
Question
dig fornex.ninja. MX
Answer
The response has no answer records.
Authority
fornex.ninja. 1800 SOA celeste.ns.cloudflare.com. dns.cloudflare.com. 2396385471 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0