52.214.161.146
ec2-52-214-161-146.eu-west-1.compute.amazonaws.com
54.72.220.210
ec2-54-72-220-210.eu-west-1.compute.amazonaws.com
63.35.99.11
ec2-63-35-99-11.eu-west-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
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aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.