18.229.189.64
ec2-18-229-189-64.sa-east-1.compute.amazonaws.com
18.229.83.171
ec2-18-229-83-171.sa-east-1.compute.amazonaws.com
18.229.89.138
ec2-18-229-89-138.sa-east-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
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aspmx.l.google.com.