50.16.23.193
ec2-50-16-23-193.compute-1.amazonaws.com
54.211.103.189
ec2-54-211-103-189.compute-1.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx4.googlemail.com.
aspmx5.googlemail.com.
aspmx.l.google.com.