34.192.81.195
ec2-34-192-81-195.compute-1.amazonaws.com
34.193.215.209
ec2-34-193-215-209.compute-1.amazonaws.com
52.0.121.192
ec2-52-0-121-192.compute-1.amazonaws.com

mail02.pearsoncmg.com.
mail03.pearsoncmg.com.