Question and response
Question
dig _spf.correioseguro.com.br. TXT
Answer
_spf.correioseguro.com.br. 300 TXT "v=spf1 mx ip4:52.54.170.158 ip4:18.214.204.9 ip4:177.43.41.176/29 ip4:186.250.187.16/28 ip4:186.250.187.97/27 ip4:189.85.10.248/29 ip4:189.112.62.214 ip4:186.250.187.8/29 ~all"
Authority
correioseguro.com.br. 172800 NS ns-130.awsdns-16.com.
correioseguro.com.br. 172800 NS ns-1484.awsdns-57.org.
correioseguro.com.br. 172800 NS ns-1966.awsdns-53.co.uk.
correioseguro.com.br. 172800 NS ns-937.awsdns-53.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0