52.16.26.181
ec2-52-16-26-181.eu-west-1.compute.amazonaws.com
52.208.182.93
ec2-52-208-182-93.eu-west-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
alt3.aspmx.l.google.com.
alt4.aspmx.l.google.com.