4.5.a.0.4.0.8.2.ip6.arpa has no MX records.
Question and response
Question
dig 4.5.a.0.4.0.8.2.ip6.arpa. MX
Answer
The response has no answer records.
Authority
4.5.a.0.4.0.8.2.ip6.arpa. 3600 SOA 186.211.32.85. sandro.lestetelecom.com.br. 2025051520 7200 540 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0