52.18.220.221
ec2-52-18-220-221.eu-west-1.compute.amazonaws.com
52.212.141.13
ec2-52-212-141-13.eu-west-1.compute.amazonaws.com
63.33.115.128
ec2-63-33-115-128.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.