Question and response
Question
dig spf.us-1.a.mimecastprotect.com. TXT
Answer
spf.us-1.a.mimecastprotect.com. 300 TXT "v=spf1 ip4:44.207.42.99 ip4:44.207.134.124 ip4:34.230.134.94 ip4:216.145.221.0/24 ~all"
Authority
us-1.a.mimecastprotect.com. 172800 NS ns-1127.awsdns-12.org.
us-1.a.mimecastprotect.com. 172800 NS ns-1864.awsdns-41.co.uk.
us-1.a.mimecastprotect.com. 172800 NS ns-509.awsdns-63.com.
us-1.a.mimecastprotect.com. 172800 NS ns-781.awsdns-33.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0