52.28.141.241
ec2-52-28-141-241.eu-central-1.compute.amazonaws.com
52.29.188.155
ec2-52-29-188-155.eu-central-1.compute.amazonaws.com
52.57.70.178
ec2-52-57-70-178.eu-central-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.