Question and response
Question
dig spf21.mailgrid.net.br. TXT
Answer
spf21.mailgrid.net.br. 300 TXT "v=spf1 ip4:158.69.195.121 ip4:51.79.38.67 ip4:54.39.164.153 ip4:192.99.254.115 ip4:192.99.83.140 ip4:51.79.44.80 ip4:51.79.44.25 ip4:158.69.5.44 ip4:158.69.187.247 ip4:167.114.34.3 ip4:54.39.14.88 ip4:51.79.38.68 ip4:51.79.38.69 -all"
Authority
mailgrid.net.br. 172800 NS ns-1289.awsdns-33.org.
mailgrid.net.br. 172800 NS ns-1608.awsdns-09.co.uk.
mailgrid.net.br. 172800 NS ns-437.awsdns-54.com.
mailgrid.net.br. 172800 NS ns-945.awsdns-54.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0