smtp.asfawn.com has no MX records.
Question and response
Question
dig smtp.asfawn.com. MX
Answer
The response has no answer records.
Authority
asfawn.com. 3600 SOA pns31.cloudns.net. noc.asfawn.com. 2024042104 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0