Question and response
Question
dig spf.smtp-1.nitronewsmail.com.br. TXT
Answer
spf.smtp-1.nitronewsmail.com.br. 300 TXT "v=spf1 ip4:142.44.211.201/32 ip4:51.161.16.145/32 ip4:51.161.16.146/32 ip4:51.161.16.147/32 ip4:51.161.16.148/32 ip4:51.161.16.149/32 ip4:51.161.16.150/32 ip4:167.114.216.41/32 ip4:167.114.216.44/32 ip4:167.114.216.51/32 ~all"
Authority
nitronewsmail.com.br. 172800 NS ns-1014.awsdns-62.net.
nitronewsmail.com.br. 172800 NS ns-1329.awsdns-38.org.
nitronewsmail.com.br. 172800 NS ns-1578.awsdns-05.co.uk.
nitronewsmail.com.br. 172800 NS ns-298.awsdns-37.com.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0