3.209.54.98
ec2-3-209-54-98.compute-1.amazonaws.com
3.227.63.228
ec2-3-227-63-228.compute-1.amazonaws.com
52.207.193.63
ec2-52-207-193-63.compute-1.amazonaws.com

east.smtp.mx.exch029.serverdata.net.
west.smtp.mx.exch029.serverdata.net.