m1.arbibox.com has no MX records.
Question and response
Question
dig m1.arbibox.com. MX
Answer
The response has no answer records.
Authority
arbibox.com. 1800 SOA doug.ns.cloudflare.com. dns.cloudflare.com. 2397287181 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0