wp1ipv4.gocloud.cloud has no MX records.
Question and response
Question
dig wp1ipv4.gocloud.cloud. MX
Answer
The response has no answer records.
Authority
gocloud.cloud. 1800 SOA joan.ns.cloudflare.com. dns.cloudflare.com. 2397182302 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0