18.228.115.71
ec2-18-228-115-71.sa-east-1.compute.amazonaws.com
18.229.7.80
ec2-18-229-7-80.sa-east-1.compute.amazonaws.com
54.94.31.4
ec2-54-94-31-4.sa-east-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
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aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.