96.255.149.in-addr.arpa has no MX records.
Question and response
Question
dig 96.255.149.in-addr.arpa. MX
Answer
The response has no answer records.
Authority
96.255.149.in-addr.arpa. 3600 SOA ns1.openitc.net. admin.openitc.net. 2023060102 86400 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0