Question and response
Question
dig au._extnetblocks.mimecast.com. TXT
Answer
au._extnetblocks.mimecast.com. 300 TXT "v=spf1 ip4:103.96.20.40 ip4:103.96.20.41 ip4:103.96.20.42 ip4:103.96.20.43 ip4:103.96.20.44 ip4:103.96.20.45 ip4:103.96.20.46 ip4:103.96.20.47 ip4:103.96.20.48 ip4:103.96.20.49 ip4:103.96.22.40 ip4:103.96.22.41 ip4:103.96.22.42 ip4:103.96.22.43 " "ip4:103.96.22.44 ip4:103.96.22.45 ip4:103.96.22.46 ip4:103.96.22.47 ip4:103.96.22.48 ip4:103.96.22.49 ~all"
Authority
mimecast.com. 86400 NS dns02.mimecast.net.
mimecast.com. 86400 NS dns03.mimecast.net.
mimecast.com. 86400 NS dns04.mimecast.net.
mimecast.com. 86400 NS dns01.mimecast.net.
Additional
dns01.mimecast.net. 300 A 185.58.87.12
dns02.mimecast.net. 300 A 205.139.110.125
dns03.mimecast.net. 300 A 195.130.217.24
dns04.mimecast.net. 300 A 170.10.128.103
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0