snowfish1.nillink.net has no MX records.
Question and response
Question
dig snowfish1.nillink.net. MX
Answer
The response has no answer records.
Authority
nillink.net. 1800 SOA ruth.ns.cloudflare.com. dns.cloudflare.com. 2396490038 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0