3.216.20.115
ec2-3-216-20-115.compute-1.amazonaws.com
3.232.122.255
ec2-3-232-122-255.compute-1.amazonaws.com
52.204.200.200
ec2-52-204-200-200.compute-1.amazonaws.com

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