Question and response
Question
dig fe3-r3-out.du01.l.antispamcloud.com. A
Answer
fe3-r3-out.du01.l.antispamcloud.com. 300 A 154.59.193.125
Authority
l.antispamcloud.com. 172800 NS ns-1229.awsdns-25.org.
l.antispamcloud.com. 172800 NS ns-2012.awsdns-59.co.uk.
l.antispamcloud.com. 172800 NS ns-4.awsdns-00.com.
l.antispamcloud.com. 172800 NS ns-824.awsdns-39.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0