Question and response
Question
dig mail.sigsync.com. TXT
Answer
mail.sigsync.com. 60 TXT "v=spf1 a ip4:18.189.89.143 ~all"
Authority
sigsync.com. 172800 NS ns-1325.awsdns-37.org.
sigsync.com. 172800 NS ns-1795.awsdns-32.co.uk.
sigsync.com. 172800 NS ns-228.awsdns-28.com.
sigsync.com. 172800 NS ns-795.awsdns-35.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0