Question and response
Question
dig xmailerserver.net. TXT
Answer
xmailerserver.net. 3600 TXT "v=spf1 a mx ip4:51.79.74.120 include:xmailer.com.br ~all"
Authority
xmailerserver.net. 172800 NS ns-1174.awsdns-18.org.
xmailerserver.net. 172800 NS ns-2020.awsdns-60.co.uk.
xmailerserver.net. 172800 NS ns-406.awsdns-50.com.
xmailerserver.net. 172800 NS ns-993.awsdns-60.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0