post10.itau.com.br has no MX records.
Question and response
Question
dig post10.itau.com.br. MX
Answer
The response has no answer records.
Authority
itau.com.br. 300 SOA asia1.akam.net. postmaster.itau.com.br. 2022022013 300 1200 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0