34.197.112.0
ec2-34-197-112-0.compute-1.amazonaws.com
44.206.60.189
ec2-44-206-60-189.compute-1.amazonaws.com
54.145.231.62
ec2-54-145-231-62.compute-1.amazonaws.com

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