Question and response
Question
dig s0-in.smtp.com. A
Answer
s0-in.smtp.com. 60 A 3.97.161.32
s0-in.smtp.com. 60 A 3.99.99.108
Authority
smtp.com. 3600 NS ns-1304.awsdns-35.org.
smtp.com. 3600 NS ns-1999.awsdns-57.co.uk.
smtp.com. 3600 NS ns-5.awsdns-00.com.
smtp.com. 3600 NS ns-735.awsdns-27.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0