18.178.37.142
ec2-18-178-37-142.ap-northeast-1.compute.amazonaws.com
35.75.41.248
ec2-35-75-41-248.ap-northeast-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
alt3.aspmx.l.google.com.
alt4.aspmx.l.google.com.
aspmx.l.google.com.