3.1.189.204
ec2-3-1-189-204.ap-southeast-1.compute.amazonaws.com
3.1.237.185
ec2-3-1-237-185.ap-southeast-1.compute.amazonaws.com
46.51.218.238
ec2-46-51-218-238.ap-southeast-1.compute.amazonaws.com

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