18.221.141.232
ec2-18-221-141-232.us-east-2.compute.amazonaws.com
3.21.5.53
ec2-3-21-5-53.us-east-2.compute.amazonaws.com

2600:1f16:4cb:5400:ba90:24b5:ea8f:da23
2600:1f16:4cb:5401:6794:d2dd:b5ec:f27

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.