54.205.63.130
ec2-54-205-63-130.compute-1.amazonaws.com
54.227.221.171
ec2-54-227-221-171.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.
mxa.mailgun.org.
mxb.mailgun.org.