Question and response
Question
dig emsmta.messageone.com. TXT
Answer
emsmta.messageone.com. 300 TXT "v=spf1 mx ip4:34.202.35.123 ~all"
Authority
messageone.com. 172800 NS ns-1035.awsdns-01.org.
messageone.com. 172800 NS ns-1843.awsdns-38.co.uk.
messageone.com. 172800 NS ns-192.awsdns-24.com.
messageone.com. 172800 NS ns-693.awsdns-22.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0