Question and response
Question
dig mimecast.com. MX
Answer
mimecast.com. 300 MX 10 service-alpha-inbound-a.mimecast.com.
mimecast.com. 300 MX 10 service-alpha-inbound-b.mimecast.com.
Authority
mimecast.com. 86400 NS dns03.mimecast.net.
mimecast.com. 86400 NS dns01.mimecast.net.
mimecast.com. 86400 NS dns02.mimecast.net.
mimecast.com. 86400 NS dns04.mimecast.net.
Additional
service-alpha-inbound-a.mimecast.com. 300 A 91.220.42.231
service-alpha-inbound-a.mimecast.com. 300 A 195.130.217.231
service-alpha-inbound-b.mimecast.com. 300 A 195.130.217.231
service-alpha-inbound-b.mimecast.com. 300 A 91.220.42.231
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