54.72.21.116
ec2-54-72-21-116.eu-west-1.compute.amazonaws.com
54.72.230.99
ec2-54-72-230-99.eu-west-1.compute.amazonaws.com
99.81.223.33
ec2-99-81-223-33.eu-west-1.compute.amazonaws.com

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