18.66.15.115
18.66.15.86
server-18-66-15-86.vie50.r.cloudfront.net
18.66.15.91
18.66.15.92

2600:9000:2304:2e00:18:47a2:ea80:93a1
2600:9000:2304:4e00:18:47a2:ea80:93a1
2600:9000:2304:5600:18:47a2:ea80:93a1
2600:9000:2304:8400:18:47a2:ea80:93a1
2600:9000:2304:8e00:18:47a2:ea80:93a1
2600:9000:2304:b200:18:47a2:ea80:93a1
2600:9000:2304:ee00:18:47a2:ea80:93a1
2600:9000:2304:f600:18:47a2:ea80:93a1

mailin1.shell-boost.com.
mailin2.shell-boost.com.