Question and response
Question
dig _email.usp.br. TXT
Answer
_email.usp.br. 1800 TXT "v=spf1 include:_comunicadores.usp.br ip4:143.107.248.0/24 ip4:200.136.0.0/28 -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0