Question and response
Question
dig spf.sendpost.email. TXT
Answer
spf.sendpost.email. 300 TXT "v=spf1 ip4:34.230.242.224 ip4:52.1.158.128 ip4:34.231.94.79 ip4:52.70.212.135 ip4:3.238.19.80/28 ip4:52.1.143.63 ip4:95.217.123.96/27 include:spf.mtaspg.email include:spf.mtaspm.email include:spf.mtaspb.email include:spf1.mtaspg.email ~all"
Authority
sendpost.email. 172800 NS ns-1471.awsdns-55.org.
sendpost.email. 172800 NS ns-15.awsdns-01.com.
sendpost.email. 172800 NS ns-1814.awsdns-34.co.uk.
sendpost.email. 172800 NS ns-881.awsdns-46.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0