Question and response
Question
dig senders.mailmasterplus.net. TXT
Answer
senders.mailmasterplus.net. 300 TXT "v=spf1 ip4:52.16.216.28 ip4:52.31.206.210 ip4:54.72.8.202 ip4:52.212.116.160 ip4:52.212.205.251 ip4:52.214.129.16 ip4:52.76.154.148 ip4:176.34.167.112 ip4:99.81.13.30 ~all"
Authority
mailmasterplus.net. 172800 NS ns-1526.awsdns-62.org.
mailmasterplus.net. 172800 NS ns-1719.awsdns-22.co.uk.
mailmasterplus.net. 172800 NS ns-319.awsdns-39.com.
mailmasterplus.net. 172800 NS ns-535.awsdns-02.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0