18.228.55.143
ec2-18-228-55-143.sa-east-1.compute.amazonaws.com
18.230.8.154
ec2-18-230-8-154.sa-east-1.compute.amazonaws.com
54.94.154.252
ec2-54-94-154-252.sa-east-1.compute.amazonaws.com

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aspmx2.googlemail.com.
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aspmx.l.google.com.