mysrsx.org has no MX records.
Question and response
Question
dig mysrsx.org. MX
Answer
The response has no answer records.
Authority
mysrsx.org. 3600 SOA dns3.cloudns.net. support.cloudns.net. 2020102207 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0