Question and response
Question
dig spf15.mailgrid.com.br. TXT
Answer
spf15.mailgrid.com.br. 300 TXT "v=spf1 ip4:148.113.207.153 ip4:54.39.164.168 ip4:142.44.218.165 ip4:18.230.12.69 ip4:51.222.208.177 ip4:192.95.19.230 ip4:51.161.91.133 ip4:54.39.78.241 ip4:54.39.118.107 ip4:148.113.195.77 include:spf16.mailgrid.com.br -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