3.122.207.244
ec2-3-122-207-244.eu-central-1.compute.amazonaws.com
52.57.136.25
ec2-52-57-136-25.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.