18.140.219.75
ec2-18-140-219-75.ap-southeast-1.compute.amazonaws.com
3.1.82.63
ec2-3-1-82-63.ap-southeast-1.compute.amazonaws.com

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