34.253.159.228
ec2-34-253-159-228.eu-west-1.compute.amazonaws.com
52.213.4.255
ec2-52-213-4-255.eu-west-1.compute.amazonaws.com
54.154.236.193
ec2-54-154-236-193.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.