Question and response
Question
dig spf1.expertsender.com. TXT
Answer
spf1.expertsender.com. 3600 TXT "v=spf1 ip4:195.192.242.53/28 ip4:195.192.243.250/24 ip4:195.192.241.250/28 ip4:193.106.104.180/28 ip4:46.248.181.0/25 ip4:208.72.238.146/28 ip4:208.72.239.128/27 -all"
Authority
expertsender.com. 3600 NS pdns08.domaincontrol.com.
expertsender.com. 3600 NS pdns07.domaincontrol.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0