34.252.51.154
ec2-34-252-51-154.eu-west-1.compute.amazonaws.com
54.74.153.133
ec2-54-74-153-133.eu-west-1.compute.amazonaws.com

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