inbound5a.ore.mailhop.org has no MX records.
Question and response
Question
dig inbound5a.ore.mailhop.org. MX
Answer
The response has no answer records.
Authority
mailhop.org. 1800 SOA henry.ns.cloudflare.com. dns.cloudflare.com. 2398245988 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0