Question and response
Question
dig tfuture-egress-002.relay.mailchannels.net. A
Answer
tfuture-egress-002.relay.mailchannels.net. 300 A 23.83.208.3
Authority
mailchannels.net. 172800 NS ns-1131.awsdns-13.org.
mailchannels.net. 172800 NS ns-1837.awsdns-37.co.uk.
mailchannels.net. 172800 NS ns-242.awsdns-30.com.
mailchannels.net. 172800 NS ns-988.awsdns-59.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0