52.22.122.251
ec2-52-22-122-251.compute-1.amazonaws.com
54.156.120.149
ec2-54-156-120-149.compute-1.amazonaws.com

alt1.aspmx.l.google.com.
alt2.aspmx.l.google.com.
aspmx2.googlemail.com.
aspmx3.googlemail.com.
aspmx.l.google.com.