o3.ptr3062.safefleetcloud.com has no MX records.
Question and response
Question
dig o3.ptr3062.safefleetcloud.com. MX
Answer
The response has no answer records.
Authority
safefleetcloud.com. 1800 SOA ken.ns.cloudflare.com. dns.cloudflare.com. 2397617619 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0