Question and response
Question
dig mx2.paubox.com. A
Answer
mx2.paubox.com. 60 A 52.26.86.178
mx2.paubox.com. 60 A 52.26.218.15
mx2.paubox.com. 60 A 52.26.137.1
Authority
paubox.com. 172800 NS ns-1114.awsdns-11.org.
paubox.com. 172800 NS ns-1972.awsdns-54.co.uk.
paubox.com. 172800 NS ns-222.awsdns-27.com.
paubox.com. 172800 NS ns-790.awsdns-34.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0