23.20.229.224
ec2-23-20-229-224.compute-1.amazonaws.com
34.199.78.231
ec2-34-199-78-231.compute-1.amazonaws.com
52.4.245.172
ec2-52-4-245-172.compute-1.amazonaws.com
54.152.96.209
ec2-54-152-96-209.compute-1.amazonaws.com
54.156.241.234
ec2-54-156-241-234.compute-1.amazonaws.com

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