52.204.112.1
ec2-52-204-112-1.compute-1.amazonaws.com
52.204.120.185
ec2-52-204-120-185.compute-1.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
alt3.aspmx.l.google.com.
alt4.aspmx.l.google.com.
aspmx.l.google.com.
inbound-smtp.us-east-1.amazonaws.com.