52.30.53.74
ec2-52-30-53-74.eu-west-1.compute.amazonaws.com
54.220.5.65
ec2-54-220-5-65.eu-west-1.compute.amazonaws.com
54.74.140.35
ec2-54-74-140-35.eu-west-1.compute.amazonaws.com

2a05:d018:13f:ab04:64b3:9a46:2d10:29a0
2a05:d018:13f:ab05:db72:fb9:f939:bdd8
2a05:d018:13f:ab06:417d:4a6a:8c0c:abf4

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