firstfind.net has no MX records.
Question and response
Question
dig firstfind.net. MX
Answer
The response has no answer records.
Authority
firstfind.net. 3600 SOA ns1.yoursrs.com. hostmaster.firstfind.net. 2023072601 3600 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0