18.158.40.187
ec2-18-158-40-187.eu-central-1.compute.amazonaws.com
18.193.238.212
ec2-18-193-238-212.eu-central-1.compute.amazonaws.com
52.59.4.254
ec2-52-59-4-254.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.