34.255.230.150
ec2-34-255-230-150.eu-west-1.compute.amazonaws.com
54.171.44.188
ec2-54-171-44-188.eu-west-1.compute.amazonaws.com
99.80.206.72
ec2-99-80-206-72.eu-west-1.compute.amazonaws.com

2a05:d018:d09:dd04:cb50:6393:9b57:64b5
2a05:d018:d09:dd11:84a7:8826:4d29:8949
2a05:d018:d09:dd12:fc63:3929:a93a:2f87

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