108.129.40.4
ec2-108-129-40-4.eu-west-1.compute.amazonaws.com
52.49.152.132
ec2-52-49-152-132.eu-west-1.compute.amazonaws.com
63.32.182.254
ec2-63-32-182-254.eu-west-1.compute.amazonaws.com

mx-01-eu-west-1.prod.hydra.sophos.com.
mx-02-eu-west-1.prod.hydra.sophos.com.