3.231.74.173
ec2-3-231-74-173.compute-1.amazonaws.com
54.164.255.78
ec2-54-164-255-78.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.