Question and response
Question
dig mx2.flockmail.com. A
Answer
mx2.flockmail.com. 60 A 54.224.71.188
mx2.flockmail.com. 60 A 3.210.123.231
mx2.flockmail.com. 60 A 54.160.25.235
Authority
flockmail.com. 172800 NS ns-1400.awsdns-47.org.
flockmail.com. 172800 NS ns-1609.awsdns-09.co.uk.
flockmail.com. 172800 NS ns-299.awsdns-37.com.
flockmail.com. 172800 NS ns-973.awsdns-57.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0