Question and response
Question
dig spf_o.mailgrid.com.br. TXT
Answer
spf_o.mailgrid.com.br. 300 TXT "v=spf1 ip4:54.94.150.54 ip4:18.230.81.152 ip4:98.82.238.235 ip4:18.230.159.57 ip4:54.232.1.72 ip4:177.71.165.207 ip4:144.217.15.82 ip4:18.231.199.231 ip4:54.94.212.36 ip4:192.99.199.241 -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