134-192-152-192.ritternet.com has no MX records.
Question and response
Question
dig 134-192-152-192.ritternet.com. MX
Answer
The response has no answer records.
Authority
ritternet.com. 600 SOA ns1.ritternet.com. hostmaster.ritternet.com. 2022102098 108 360 60 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0