52.209.22.240
ec2-52-209-22-240.eu-west-1.compute.amazonaws.com
52.215.199.159
ec2-52-215-199-159.eu-west-1.compute.amazonaws.com
52.31.142.243
ec2-52-31-142-243.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.