52.213.56.216
ec2-52-213-56-216.eu-west-1.compute.amazonaws.com
52.31.107.133
ec2-52-31-107-133.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.