65.8.194.174
server-65-8-194-174.bos50.r.cloudfront.net
65.8.194.184
server-65-8-194-184.bos50.r.cloudfront.net
65.8.194.43
server-65-8-194-43.bos50.r.cloudfront.net
65.8.194.96
server-65-8-194-96.bos50.r.cloudfront.net

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.
inbound-smtp.us-east-1.amazonaws.com.