124.217.62.in-addr.arpa has no MX records.
Question and response
Question
dig 124.217.62.in-addr.arpa. MX
Answer
The response has no answer records.
Authority
124.217.62.in-addr.arpa. 3600 SOA ns-pri.grnet.gr. dnsmgr.grnet.gr. 2021070248 172800 7200 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0