18.231.90.104
ec2-18-231-90-104.sa-east-1.compute.amazonaws.com
54.233.234.60
ec2-54-233-234-60.sa-east-1.compute.amazonaws.com
54.94.36.95
ec2-54-94-36-95.sa-east-1.compute.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.