52.218.153.50
s3-website-us-west-2.amazonaws.com
52.92.148.43
s3-website-us-west-2.amazonaws.com
52.92.154.139
s3-website-us-west-2.amazonaws.com
52.92.161.59
52.92.179.83
s3-website-us-west-2.amazonaws.com
52.92.200.67
s3-website-us-west-2.amazonaws.com
52.92.204.115
s3-website-us-west-2.amazonaws.com
52.92.229.163
s3-website-us-west-2.amazonaws.com

us-smtp-inbound-1.mimecast.com.
us-smtp-inbound-2.mimecast.com.