Question and response
Question
dig spf.es1.proofhub.com. TXT
Answer
spf.es1.proofhub.com. 60 TXT "v=spf1 ip4:45.79.134.243 ip4:45.79.157.77 ip4:66.228.35.196 ip4:172.104.218.245 ~all"
Authority
proofhub.com. 172800 NS ns-1267.awsdns-30.org.
proofhub.com. 172800 NS ns-1566.awsdns-03.co.uk.
proofhub.com. 172800 NS ns-491.awsdns-61.com.
proofhub.com. 172800 NS ns-772.awsdns-32.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0