23.20.91.0
ec2-23-20-91-0.compute-1.amazonaws.com
35.169.143.246
ec2-35-169-143-246.compute-1.amazonaws.com
44.194.40.19
ec2-44-194-40-19.compute-1.amazonaws.com

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