34.224.254.82
ec2-34-224-254-82.compute-1.amazonaws.com
34.237.229.98
ec2-34-237-229-98.compute-1.amazonaws.com
52.1.238.132
ec2-52-1-238-132.compute-1.amazonaws.com

mx1.smtp.exch029.serverdata.net.
mx2.smtp.exch029.serverdata.net.