52.218.232.115
s3-website-us-west-2.amazonaws.com
52.92.131.115
s3-website-us-west-2.amazonaws.com
52.92.137.35
s3-website-us-west-2.amazonaws.com
52.92.154.251
52.92.179.51
s3-website-us-west-2.amazonaws.com
52.92.231.3
s3-website-us-west-2.amazonaws.com
52.92.233.35
s3-website-us-west-2.amazonaws.com
52.92.242.227
s3-website-us-west-2.amazonaws.com

do158-211.mailgun.net.
m68-152.mailgun.net.
m68-166.mailgun.net.
m70-74.mailgun.net.
mail.a48.static.mgsend.net.
mxa.mailgun.org.
mxb.mailgun.org.

52.218.128.159
s3-website-us-west-2.amazonaws.com
52.218.152.154
s3-website-us-west-2.amazonaws.com
52.218.177.10
s3-website-us-west-2.amazonaws.com
52.218.200.75
s3-website-us-west-2.amazonaws.com
52.92.136.211
s3-website-us-west-2.amazonaws.com
52.92.154.251
52.92.179.139
s3-website-us-west-2.amazonaws.com
52.92.249.131
s3-website-us-west-2.amazonaws.com

inbound-smtp.us-west-2.amazonaws.com.