52.18.226.107
ec2-52-18-226-107.eu-west-1.compute.amazonaws.com
54.217.89.131
ec2-54-217-89-131.eu-west-1.compute.amazonaws.com
54.76.65.175
ec2-54-76-65-175.eu-west-1.compute.amazonaws.com

2a05:d018:13f:ab04:39f1:8ad0:1da4:e059
2a05:d018:13f:ab05:e921:bb28:9808:433f
2a05:d018:13f:ab06:c599:eff1:554b:a3d8

inbound-smtp.eu-west-1.amazonaws.com.