52.201.171.99
ec2-52-201-171-99.compute-1.amazonaws.com
52.22.179.230
ec2-52-22-179-230.compute-1.amazonaws.com

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