44.232.37.45
ec2-44-232-37-45.us-west-2.compute.amazonaws.com
44.236.215.233
ec2-44-236-215-233.us-west-2.compute.amazonaws.com
52.33.129.156
ec2-52-33-129-156.us-west-2.compute.amazonaws.com

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