Question and response
Question
dig spf.mandrillapp.com. TXT
Answer
spf.mandrillapp.com. 86400 TXT "v=spf1 ip4:198.2.128.0/24 ip4:198.2.132.0/22 ip4:198.2.136.0/23 ip4:198.2.145.0/24 ip4:198.2.186.0/23 ip4:205.201.131.128/25 ip4:205.201.134.128/25 ip4:205.201.136.0/23 ip4:205.201.139.0/24 ip4:198.2.177.0/24 ip4:198.2.178.0/23 ip4:198.2.180.0/24 ~all"
Authority
mandrillapp.com. 172800 NS ns-1127.awsdns-12.org.
mandrillapp.com. 172800 NS ns-1934.awsdns-49.co.uk.
mandrillapp.com. 172800 NS ns-289.awsdns-36.com.
mandrillapp.com. 172800 NS ns-720.awsdns-26.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0