137.forpsi.net has no MX records.
Question and response
Question
dig 137.forpsi.net. MX
Answer
The response has no answer records.
Authority
137.forpsi.net. 3600 SOA ns.forpsi.net. admin.forpsi.com. 2022053002 14400 3600 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0