52.19.5.52
ec2-52-19-5-52.eu-west-1.compute.amazonaws.com
52.210.225.121
ec2-52-210-225-121.eu-west-1.compute.amazonaws.com
52.51.132.85
ec2-52-51-132-85.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.