34.255.236.134
ec2-34-255-236-134.eu-west-1.compute.amazonaws.com
54.194.101.189
ec2-54-194-101-189.eu-west-1.compute.amazonaws.com
54.195.41.56
ec2-54-195-41-56.eu-west-1.compute.amazonaws.com

cluster1a.eu.messagelabs.com.
cluster1.eu.messagelabs.com.