Question and response
Question
dig xmailer.com.br. TXT
Answer
xmailer.com.br. 300 TXT "v=spf1 ip4:135.148.31.12 ip4:51.79.17.20 ip4:52.200.108.97 ip4:18.228.229.224 include:spf.xmailer.com.br include:spf1.xmailer.com.br include:spf2.xmailer.com.br include:spf3.xmailer.com.br include:spf-246.xmailer.com.br ~all"
Authority
xmailer.com.br. 172800 NS ns-1294.awsdns-33.org.
xmailer.com.br. 172800 NS ns-1578.awsdns-05.co.uk.
xmailer.com.br. 172800 NS ns-289.awsdns-36.com.
xmailer.com.br. 172800 NS ns-550.awsdns-04.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0