18.210.73.99
ec2-18-210-73-99.compute-1.amazonaws.com
3.228.148.156
ec2-3-228-148-156.compute-1.amazonaws.com
34.237.219.131
ec2-34-237-219-131.compute-1.amazonaws.com
52.21.87.160
ec2-52-21-87-160.compute-1.amazonaws.com

mailstore1.secureserver.net.
smtp.secureserver.net.