34.202.248.117
ec2-34-202-248-117.compute-1.amazonaws.com
54.80.139.38
ec2-54-80-139-38.compute-1.amazonaws.com
54.85.93.205
ec2-54-85-93-205.compute-1.amazonaws.com

aspmx.l.google.com.
mxa.mailgun.org.
mxb.mailgun.org.