keyhelp.threatoff.eu has no MX records.
Question and response
Question
dig keyhelp.threatoff.eu. MX
Answer
The response has no answer records.
Authority
threatoff.eu. 1800 SOA christian.ns.cloudflare.com. dns.cloudflare.com. 2397184989 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0