44.225.9.74
ec2-44-225-9-74.us-west-2.compute.amazonaws.com
52.34.156.59
ec2-52-34-156-59.us-west-2.compute.amazonaws.com
52.34.240.131
ec2-52-34-240-131.us-west-2.compute.amazonaws.com

ms93978197.msv1.invalid.
us-smtp-inbound-1.mimecast.com.
us-smtp-inbound-2.mimecast.com.