107.22.184.225
ec2-107-22-184-225.compute-1.amazonaws.com
34.192.29.210
ec2-34-192-29-210.compute-1.amazonaws.com
35.170.181.191
ec2-35-170-181-191.compute-1.amazonaws.com

2600:1f10:44cd:d900:553f:6652:707b:9ff0
2600:1f10:44cd:d901:e0e2:2d79:d821:c521
2600:1f10:44cd:d902:f7e3:c292:41c5:ed71

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