fra.as210546.net has no MX records.
Question and response
Question
dig fra.as210546.net. MX
Answer
The response has no answer records.
Authority
as210546.net. 1800 SOA junade.ns.cloudflare.com. dns.cloudflare.com. 2397648561 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0