n2nmail.affinhwang.com has no MX records.
Question and response
Question
dig n2nmail.affinhwang.com. MX
Answer
The response has no answer records.
Authority
affinhwang.com. 1800 SOA connie.ns.cloudflare.com. dns.cloudflare.com. 2397822467 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0