3.123.87.251
ec2-3-123-87-251.eu-central-1.compute.amazonaws.com
54.93.159.178
ec2-54-93-159-178.eu-central-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
alt3.aspmx.l.google.com.
alt4.aspmx.l.google.com.
aspmx.l.google.com.
inbound-smtp.us-east-1.amazonaws.com.