Question and response
Question
dig _spf.ferenz.com.br. TXT
Answer
_spf.ferenz.com.br. 300 TXT "v=spf1 ip4:170.81.43.254 ip4:45.224.129.254 include:servers.mcsv.net ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0