Question and response
Question
dig spf1.mailgrid.com.br. TXT
Answer
spf1.mailgrid.com.br. 300 TXT "v=spf1 ip4:18.229.96.171 ip4:18.229.191.203 ip4:18.229.173.145 ip4:18.228.209.165 ip4:18.231.74.84 ip4:52.202.93.79 ip4:34.232.177.43 ip4:34.224.247.150 ip4:54.157.12.119 ip4:52.44.173.205 ip4:52.200.108.97 ip4:192.99.83.140 ip4:54.233.69.193 -all"
Authority
mailgrid.com.br. 3600 NS ns-1325.awsdns-37.org.
mailgrid.com.br. 3600 NS ns-177.awsdns-22.com.
mailgrid.com.br. 3600 NS ns-1838.awsdns-37.co.uk.
mailgrid.com.br. 3600 NS ns-889.awsdns-47.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0